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MSC1212

SBAS278A – MARCH 2003 – REVISED DECEMBER 2004

www.ti.com

FEATURES

ANALOG FEATURES

● 24-BITS NO MISSING CODES

● 22-BITS EFFECTIVE RESOLUTION AT 10Hz

Low Noise: 75nV

● PGA FROM 1 TO 128

● PRECISION ON-CHIP VOLTAGE REFERENCE:

Accuracy: 0.2%

Drift: 5ppm/°C

● 8 DIFFERENTIAL/SINGLE-ENDED CHANNELS

● ON-CHIP OFFSET/GAIN CALIBRATION

● OFFSET DRIFT: 0.02PPM/°C

● GAIN DRIFT: 0.5PPM/°C

● ON-CHIP TEMPERATURE SENSOR

● SELECTABLE BUFFER INPUT

● BURNOUT DETECT

● QUAD 16-BIT MONOTONIC VOLTAGE DACs:

2 VDACs Can Be Programmed as IDACs

8µs Settling Time

DIGITAL FEATURES

Microcontroller Core

● 8051 COMPATIBLE

● HIGH SPEED CORE:

4 Clocks per Instruction Cycle

● DC TO 30MHz

● SINGLE INSTRUCTION 133ns

● DUAL DATA POINTER

Memory

● UP TO 32kB FLASH DATA MEMORY

● FLASH MEMORY PARTITIONING

● ENDURANCE 1M ERASE/WRITE CYCLES,

100-YEAR DATA RETENTION

● IN-SYSTEM SERIALLY PROGRAMMABLE

● EXTERNAL PROGRAM/DATA MEMORY (64kB)

● 1280 BYTES DATA SRAM

● FLASH MEMORY SECURITY

● 2kB BOOT ROM

● PROGRAMMABLE WAIT STATE CONTROL

Precision Analog-to-Digital Converter (ADC)

and Digital-to-Analog Converters (DACs)

with 8051 Microcontroller and Flash Memory

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

Peripheral Features

● 34 I/O PINS

● ADDITIONAL 32-BIT ACCUMULATOR

● THREE 16-BIT TIMER/COUNTERS

● SYSTEM TIMERS

● PROGRAMMABLE WATCHDOG TIMER

● FULL-DUPLEX DUAL USARTS

● MASTER/SLAVE SPI

™

WITH DMA

● 16-BIT PWM

● POWER MANAGEMENT CONTROL

● INTERNAL CLOCK DIVIDER

● IDLE MODE CURRENT < 200µA

● STOP MODE CURRENT < 100nA

● PROGRAMMABLE BROWNOUT RESET

● PROGRAMMABLE LOW VOLTAGE DETECT

● 21 INTERRUPT SOURCES

● TWO HARDWARE BREAKPOINTS

GENERAL FEATURES

● PIN-COMPATIBLE WITH MSC1210/11/13/14

● PACKAGE: TQFP-64

● LOW POWER: 4mW

● INDUSTRIAL TEMPERATURE RANGE:

–40°C to +85°C

● POWER SUPPLY: 2.7V to 5.25V

APPLICATIONS

● INDUSTRIAL PROCESS CONTROL

● INSTRUMENTATION

● LIQUID/GAS CHROMATOGRAPHY

● BLOOD ANALYSIS

● SMART TRANSMITTERS

● PORTABLE INSTRUMENTS

● WEIGH SCALES

● PRESSURE TRANSDUCERS

● INTELLIGENT SENSORS

● PORTABLE APPLICATIONS

● DAS SYSTEMS

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

MSC1212

SBAS278A

www.ti.com

PACKAGE/ORDERING INFORMATION

(1)

SPECIFIED

FLASH PACKAGE TEMPERATURE PACKAGE

PRODUCT MEMORY PACKAGE-LEAD DESIGNATOR RANGE MARKING

MSC1212Y2 4k TQFP-64 PAG –40°C to +85°C MSC1212Y2

MSC1212Y2 4k

"" " "

MSC1212Y3 8k TQFP-64 PAG –40°C to +85°C MSC1212Y3

MSC1212Y3 8k

"" " "

MSC1212Y4 16k TQFP-64 PAG –40°C to +85°C MSC1212Y4

MSC1212Y4 16k

"" " "

MSC1212Y5 32k TQFP-64 PAG –40°C to +85°C MSC1212Y5

MSC1212Y5 32k "" " "

NOTE: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet, or refer to our web

site at www.ti.com/msc.

ABSOLUTE MAXIMUM RATINGS

(1)

Analog Inputs

Input Current ............................................................ 100mA, Momentary

Input Current .............................................................. 10mA, Continuous

Input Voltage .............................................AGND – 0.3V to AV

+ 0.3V

Power Supply

to DGND...................................................................... –0.3V to 6V

to AGND ......................................................................–0.3V to 6V

AGND to DGND .............................................................. –0.3V to +0.3V

REF

to AGND ....................................................... –0.3V to AV

+ 0.3V

Digital Input Voltage to DGND .............................. –0.3V to DV

+ 0.3V

Digital Output Voltage to DGND ........................... –0.3V to DV

+ 0.3V

Maximum Junction Temperature ................................................ +150°C

Operating Temperature Range ...................................... –40°C to +85°C

Storage Temperature Range ....................................... –65°C to +150°C

Lead Temperature (soldering, 10s) ............................................ +235°C

Package Power Dissipation ................................ (T

Max - T

AMBIENT

Output Current All Pins ................................................................ 200mA

Output Pin Short Circuit .....................................................................10s

Thermal Resistance, Junction-to-Ambient

(

) High K (2s2p) 50.9°C/W

Thermal Resistance, Junction-to-Ambient

(

) Low K (1s) .... 76.2°C/W

Thermal Resistance, Junction-to-Case (

) ........................... 12.5°C/W

Digital Outputs

Output Current ......................................................... 100mA, Continuous

I/O Source/Sink Current ............................................................... 100mA

Power Pin Maximum .................................................................... 300mA

NOTE: (1) Stresses beyond those listed under

Absolute Maximum Ratings

may

cause permanent damage to the device. Exposure to absolute-maximum-rated

conditions for extended periods may affect device reliability.

ELECTROSTATIC

DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Texas

Instruments recommends that all integrated circuits be handled

with appropriate precautions. Failure to observe proper han-

dling and installation procedures can cause damage.

ESD damage can range from subtle performance degrada-

tion to complete device failure. Precision integrated circuits

may be more susceptible to damage because very small

parametric changes could cause the device not to meet its

published specifications.

FEATURES

(1)

MSC1212Y2

(2)

MSC1212Y3

(2)

MSC1212Y4

(2)

MSC1212Y5

(2)

Flash Program Memory (Bytes) Up to 4k Up to 8k Up to 16k Up to 32k

Flash Data Memory (Bytes) Up to 4k Up to 8k Up to 16k Up to 32k

Internal Scratchpad RAM (Bytes) 256 256 256 256

Internal MOVX SRAM (Bytes) 1024 1024 1024 1024

Externally Accessible Memory (Bytes) 64k Program, 64k Data 64k Program, 64k Data 64k Program, 64k Data 64k Program, 64k Data

NOTES: (1) All peripheral features are the same on all devices; the flash memory size is the only difference. (2) The last digit of the part number (

) represents

the onboard flash size = (2

)kBytes.

MSC1212Yx FAMILY FEATURES

MSC1212

SBAS278A

www.ti.com

ELECTRICAL CHARACTERISTICS: AV

= 5V

All specifications from T

MIN

to T

MAX

, DV

= +2.7V to 5.25V, f

MOD

= 15.625kHz, PGA = 1, Buffer ON, f

DATA

= 10Hz, Bipolar, and V

REF

≡ (REF IN+) – (REF IN–) = +2.5V,

unless otherwise noted. For V

DAC

, V

REF

= AV

, R

LOAD

= 10kΩ, and C

LOAD

= 200pF, unless otherwise noted.

MSC1212Yx

PARAMETER CONDITION MIN TYP MAX UNITS

ANALOG INPUT (AIN0-AIN7, AINCOM)

Analog Input Range Buffer OFF AGND – 0.1 AV

+ 0.1 V

Buffer ON AGND + 50mV AV

– 1.5 V

Full-Scale Input Voltage Range (In+) – (In–); See Figure 4 ±V

REF

/PGA V

Differential Input Impedance Buffer OFF 7/PGA MΩ

Input Current Buffer ON 0.5 nA

Bandwidth

Fast Settling Filter –3dB 0.469 • f

DATA

Sinc

Filter –3dB 0.318 • f

DATA

Sinc

Filter –3dB 0.262 • f

DATA

Programmable Gain Amplifier User-Selectable Gain Ranges 1 128

Input Capacitance Buffer ON 9 pF

Input Leakage Current Multiplexer Channel Off, T = +25°C 0.5 pA

Burnout Current Sources Sensor Input Open Circuit ±2 µA

ADC OFFSET DAC

Offset DAC Range

±V

REF

/(2 • PGA)

Offset DAC Monotonicity 8 Bits

Offset DAC Gain Error ±1.5 % of Range

Offset DAC Gain Error Drift 1 ppm/°C

SYSTEM PERFORMANCE

Resolution 24 Bits

ENOB 22 Bits

Output Noise See Typical Characteristics

No Missing Codes Sinc

Filter 24 Bits

Integral Nonlinearity End Point Fit, Differential Input ±0.0015 %FSR

Offset Error After Calibration 7.5 ppm of FS

Offset Drift

(1)

Before Calibration 0.02 ppm of FS/°C

Gain Error

(2)

After Calibration 0.005 %

Gain Error Drift

(1)

Before Calibration 0.5 ppm/°C

System Gain Calibration Range 80 120 % of FS

System Offset Calibration Range –50 50 % of FS

Common-Mode Rejection At DC 100 115 dB

= 60Hz, f

DATA

= 10Hz 130 dB

= 50Hz, f

DATA

= 50Hz 120 dB

= 60Hz, f

DATA

= 60Hz 120 dB

Normal Mode Rejection f

SIG

= 50Hz, f

DATA

= 50Hz 100 dB

SIG

= 60Hz, f

DATA

= 60Hz 100 dB

Power-Supply Rejection At DC, dB = –20log(∆V

OUT

/∆V

)

(3)

88 dB

VOLTAGE REFERENCE INPUTS

Reference Input Range REF IN+, REF IN– 0.0 AV

(2)

REF

≡ (REF IN+) – (REF IN–) 0.3 2.5 AV

REF

Common-Mode Rejection At DC 110 dB

Input Current

(4)

REF

= 2.5V, ADC Only 10 µA

DAC Reference Current For Each DAC, 5V Reference 25 µA

ON-CHIP VOLTAGE REFERENCE

Output Voltage VREFH = 1 at +25°C, PGA = 1, 2, 4, 8 2.495 2.5 2.505 V

VREFH = 0 1.25 V

Power-Supply Rejection Ratio 65 dB

Short-Circuit Current Source 8mA

Short-Circuit Current Sink 50 µA

Short-Circuit Duration Sink or Source Indefinite

Drift 5 ppm/°C

Output Impedance Sourcing 100µA3Ω

Startup Time from Power ON C

REFOUT

= 0.1µF8ms

Temperature Sensor

Temperature Sensor Voltage T = +25°C115mV

Temperature Sensor Coefficient 375 µV/°C

VOLTAGE DAC STATIC PERFORMANCE

(5)

Resolution 16 Bits

Relative Accuracy ±0.05 ±0.146 %

Differential Nonlinearity ±1LSB

Zero Code Error All 0s Loaded to DAC Register +13 +35 mV

Full-Scale Error All 1s Loaded to DAC Register –1.25 0 % of FSR

Gain Error –1.25 0 +1.25 % of FSR

Zero Code Error Drift ±20 µV/°C

Gain Temperature Coefficient ±5 ppm of FSR/°C

MSC1212

SBAS278A

www.ti.com

ELECTRICAL CHARACTERISTICS: AV

= 3V

All specifications from T

MIN

to T

MAX

, AV

= +3V, DV

= +2.7V to 5.25V, f

MOD

= 15.625kHz, PGA = 1, Buffer ON, f

DATA

= 10Hz, Bipolar, and V

REF

≡ (REF IN+) – (REF IN–) = +1.25V,

unless otherwise noted.

For V

DAC

, V

REF

= AV

, R

LOAD

= 10kΩ, and C

LOAD

= 200pF, unless otherwise noted.

ELECTRICAL CHARACTERISTICS: AV

= 5V (Cont.)

All specifications from T

MIN

to T

MAX

, DV

= +2.7V to 5.25V, f

MOD

= 15.625kHz, PGA = 1, Buffer ON, f

DATA

= 10Hz, Bipolar, and V

REF

≡ (REF IN+) – (REF IN–) = +2.5V,

unless otherwise noted. For V

DAC

, V

REF

= AV

, R

LOAD

= 10kΩ, and C

LOAD

= 200pF, unless otherwise noted.

MSC1212Yx

PARAMETER CONDITION MIN TYP MAX UNITS

VOLTAGE DAC OUTPUT CHARACTERISTICS

(6)

Output Voltage Range AGND AV

Output Voltage Settling Time To ±0.003% FSR, 0200

to FD00

8 µs

Slew Rate 1V/µs

DC Output Impedance 7 Ω

Short-Circuit Current All 1s Loaded to DAC Register 20 mA

IDAC OUTPUT CHARACTERISTICS

Full-Scale Output Current Maximum V

REF

= 2.5V 25 mA

Maximum Short-Circuit Current Duration Indefinite

Compliance Voltage AV

– 1.5 V

Relative Accuracy Over Full Range 0.185 % of FSR

Zero Code Error 0.5 % of FSR

Full-Scale Error –0.4 % of FSR

Gain Error –0.6 % of FSR

ANALOG POWER-SUPPLY REQUIREMENTS

Analog Power-Supply Voltage AV

4.75 5.25 V

Analog Current I

ADC

+ I

VREF

Analog OFF, PDAD = 1 < 1 nA

ADC Current I

ADC

PGA = 1, Buffer OFF 200 µA

PGA = 128, Buffer OFF 500 µA

PGA = 1, Buffer ON 240 µA

PGA = 128, Buffer ON 850 µA

VDAC Current I

VDAC

Excluding Load Current External Reference 250 µA

REF

Supply Current I

VREF

ADC ON, V

DAC

OFF 250 µA

NOTES: (1) Calibration can minimize these errors. (2) The gain calibration cannot have a REF IN+ of more than AV

– 1.5V with buffer ON. To calibrate gain,

turn buffer off. (3) ∆V

OUT

is change in digital result. (4) 9pF switched capacitor at f

SAMP

clock frequency (see Figure 6). (5) Linearity calculated using a reduced code

range of 512 to 65024; output unloaded. (6) Ensured by design and characterization, not production tested.

MSC1212Yx

PARAMETER CONDITION MIN TYP MAX UNITS

ANALOG INPUT (AIN0-AIN7, AINCOM)

Analog Input Range Buffer OFF AGND – 0.1 AV

+ 0.1 V

Buffer ON AGND + 50mV AV

– 1.5 V

Full-Scale Input Voltage Range (In+) – (In–); See Figure 4 ±V

REF

/PGA V

Differential Input Impedance Buffer OFF 7/PGA MΩ

Input Current Buffer ON 0.5 nA

Bandwidth

Fast Settling Filter –3dB 0.469 • f

DATA

Sinc

Filter –3dB 0.318 • f

DATA

Sinc

Filter –3dB 0.262 • f

DATA

Programmable Gain Amplifier User-Selectable Gain Ranges 1 128

Input Capacitance Buffer On 9 pF

Input Leakage Current Multiplexer Channel Off, T = +25°C 0.5 pA

Burnout Current Sources Sensor Input Open Circuit ±2 µA

ADC OFFSET DAC

Offset DAC Range

±V

REF

/(2 • PGA)

Offset DAC Monotonicity 8 Bits

Offset DAC Gain Error ±1.5 % of Range

Offset DAC Gain Error Drift 1 ppm/°C

SYSTEM PERFORMANCE

Resolution 24 Bits

ENOB 22 Bits

Output Noise See Typical Characteristics

No Missing Codes Sinc

Filter 24 Bits

Integral Nonlinearity End Point Fit, Differential Input ±0.0015 %FSR

Offset Error After Calibration 7.5 ppm of FS

Offset Drift

(1)

Before Calibration 0.02 ppm of FS/°C

Gain Error

(2)

After Calibration 0.005 %

Gain Error Drift

(1)

Before Calibration 1.0 ppm/°C

System Gain Calibration Range 80 120 % of FS

System Offset Calibration Range –50 50 % of FS

MSC1212

SBAS278A

www.ti.com

ELECTRICAL CHARACTERISTICS: AV

= 3V (Cont.)

All specifications from T

MIN

to T

MAX

, AV

= +3V, DV

= +2.7V to 5.25V, f

MOD

= 15.625kHz, PGA = 1, Buffer ON, f

DATA

= 10Hz, and Bipolar, V

REF

≡ (REF IN+) – (REF IN–) = +1.25V,

unless otherwise noted.

For V

DAC

, V

REF

= AV

, R

LOAD

= 10kΩ, and C

LOAD

= 200pF, unless otherwise noted.

MSC1212Yx

PARAMETER CONDITION MIN TYP MAX UNITS

SYSTEM PERFORMANCE (Cont.)

Common-Mode Rejection At DC 100 115 dB

= 60Hz, f

DATA

= 10Hz 130 dB

= 50Hz, f

DATA

= 50Hz 120 dB

= 60Hz, f

DATA

= 60Hz 120 dB

Normal Mode Rejection f

SIG

= 50Hz, f

DATA

= 50Hz 100 dB

SIG

= 60Hz, f

DATA

= 60Hz 100 dB

Power-Supply Rejection At DC, dB = –20log(∆V

OUT

/∆V

)

(3)

85 dB

VOLTAGE REFERENCE INPUTS

Reference Input Range REF IN+, REF IN– 0.0 AV

(2)

REF

≡ (REF IN+) – (REF IN–) 0.3 1.25 AV

REF

Common-Mode Rejection At DC 110 dB

Input Current

(4)

REF

= 1.25V, ADC Only 10 µA

DAC Reference Current For each DAC, 3V Reference 25 µA

ON-CHIP VOLTAGE REFERENCE

Output Voltage VREFH = 0 at +25°C, PGA = 1, 2, 4, 8 1.245 1.25 1.255 V

Power-Supply Rejection Ratio 65 dB

Short-Circuit Current Source 2.6 mA

Short-Circuit Current Sink 50 µA

Short-Circuit Duration Sink or Source Indefinite

Drift 5 ppm/°C

Output Impedance Sourcing 100µA3Ω

Startup Time from Power ON C

REFOUT

= 0.1µF8ms

Temperature Sensor

Temperature Sensor Voltage T = +25°C 115 mV

Temperature Sensor Coefficient 375 µV/°C

VOLTAGE DAC STATIC PERFORMANCE

(5)

Resolution 16 Bits

Relative Accuracy ±0.05 ±0.146 % of FSR

Differential Nonlinearity Ensured Monotonic by Design ±1LSB

Zero Code Error All 0s Loaded to DAC Register +13 +35 mV

Full-Scale Error All 1s Loaded to DAC Register –1.25 0 % of FSR

Gain Error –1.25 0 ±1.25 % of FSR

Zero Code Error Drift ±20 µV/°C

Gain Temperature Coefficient ±5 ppm of FSR/°C

VOLTAGE DAC OUTPUT CHARACTERISTICS

(6)

Output Voltage Range AGND AV

Output Voltage Settling Time To ±0.003% FSR, 0200

to FD00

8 µs

Slew Rate 1V/µs

DC Output Impedance 7 Ω

Short-Circuit Current All 1s Loaded to DAC Register 16 mA

IDAC OUTPUT CHARACTERISTICS

Full-Scale Output Current Maximum V

REF

= 2.5V 25 mA

Maximum Short-Circuit Current Duration Indefinite

Compliance Voltage AV

– 1.5

Relative Accuracy Over Full Range 0.185 % of FSR

Zero Code Error 0.5 % of FSR

Full-Scale Error –0.4 % of FSR

Gain Error –0.6 % of FSR

ANALOG POWER-SUPPLY REQUIREMENTS

Analog Power-Supply Voltage AV

2.7 3.6 V

Analog Current I

ADC

+ I

VREF

Analog OFF, PDAD = 1 < 1 nA

ADC Current I

ADC

PGA = 1, Buffer OFF 200 µA

PGA = 128, Buffer OFF 500 µA

PGA = 1, Buffer ON 240 µA

PGA = 128, Buffer ON 850 µA

VDAC Current I

VDAC

Excluding Load Current External Reference 250 µA

REF

Current I

VREF

250 µA

NOTES: (1) Calibration can minimize these errors. (2) The gain calibration cannot have a REF IN+ of more than AV

– 1.5V with buffer ON. To calibrate gain,

turn buffer off. (3) ∆V

OUT

is change in digital result. (4) 9pF switched capacitor at f

SAMP

clock frequency (see Figure 6). (5) Linearity calculated using a reduced code

range of 512 to 65024; output unloaded. (6) Ensured by design and characterization, not production tested.

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