芯片80C51的技术资料
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Philips Semiconductors Product specification
80C31/80C51/87C51CMOS single-chip 8-bit microcontrollers
3-3
1996 Aug 16 853–0169 17187
DESCRIPTION
The Philips 80C31/80C51/87C51 is a high-performance
microcontroller fabricated with Philips high-density CMOS
technology. The CMOS 8XC51 is functionally compatible with the
NMOS 8031/8051 microcontrollers. The Philips CMOS technology
combines the high speed and density characteristics of HMOS with
the low power attributes of CMOS. Philips epitaxial substrate
minimizes latch-up sensitivity.
The 8XC51 contains a 4k × 8 ROM (80C51) EPROM (87C51), a 128
× 8 RAM, 32 I/O lines, two 16-bit counter/timers, a five-source,
two-priority level nested interrupt structure, a serial I/O port for either
multi-processor communications, I/O expansion or full duplex UART,
and on-chip oscillator and clock circuits.
In addition, the device has two software selectable modes of power
reduction—idle mode and power-down mode. The idle mode freezes
the CPU while allowing the RAM, timers, serial port, and interrupt
system to continue functioning. The power-down mode saves the
RAM contents but freezes the oscillator, causing all other chip
functions to be inoperative.
FEATURES
•8031/8051 compatible
– 4k × 8 ROM (80C51)
– 4k × 8 EPROM (87C51)
– ROMless (80C31)
– 128 × 8 RAM
– Two 16-bit counter/timers
– Full duplex serial channel
– Boolean processor
•Memory addressing capability
– 64k ROM and 64k RAM
•Power control modes:
– Idle mode
– Power-down mode
• CMOS and TTL compatible
•Five speed ranges at V
CC
= 5V
– 12MHz
– 16MHz
– 24MHz
– 33MHz
•Five package styles
•Extended temperature ranges
•OTP package available
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
RST
RxD/P3.0
TxD/P3.1
INT0
/P3.2
INT1
/P3.3
T0/P3.4
T1/P3.5
P1.7
WR
/P3.6
RD
/P3.7
XTAL2
XTAL1
V
SS
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15
PSEN
ALE/PROG
EA/V
PP
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
V
CC
CERAMIC
AND
PLASTIC
DUAL
IN-LINE
PACKAGE
CERAMIC
AND
PLASTIC
LEAD
CHIP
CARRIER
6140
7
17
39
29
18 28
PLASTIC
QUAD
FLAT
PACK
44
34
1
11
33
23
12 22
SU00001
SEE PAGE 3-6 FOR QFP AND LCC PIN FUNCTIONS.
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