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INTEGRATED CIRCUITS
80C31/80C32
80C51 8-bit microcontroller family
128/256 byte RAM ROMless low voltage (2.7 V–5.5 V),
low power, high speed (33 MHz)
Product specification
IC28 Data Handbook
2000 Aug 07
Philips
Semiconductors

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Philips Semiconductors
80C51 8-bit microcontroller family
128/256 byte RAM ROMless low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
Product specification
80C31/80C32
DESCRIPTION
The Philips 80C31/32 is a high-performance static 80C51 design
fabricated with Philips high-density CMOS technology with operation
from 2.7 V to 5.5 V.
The 80C31/32 ROMless devices contain a 128 × 8 RAM/256 × 8
RAM, 32 I/O lines, three 16-bit counter/timers, a six-source,
four-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 is a low power static design which offers a
wide range of operating frequencies down to zero. Two software
selectable modes of power reduction—idle mode and power-down
mode are available. 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. Since the design is static, the clock can be stopped
without loss of user data and then the execution resumed from the
point the clock was stopped.
SELECTION TABLE
For applications requiring more ROM and RAM, see the 8XC54/58
and 8XC51RA+/RB+/RC+/80C51RA+ data sheet.
ROM/EPROM
Memory Size
(X by 8)
RAM Size
(X by 8)
Programmable
Timer Counter
(PCA)
80C31/8XC51
0K/4K
128 No
80C32/8XC52/54/58
0K/8K/16K/32K
256
No
80C51RA+/8XC51RA+/RB+/RC+
0K/8K/16K/32K
512
Yes
8XC51RD+
64K
1024
Yes
Hardware
Watch Dog
Timer
No
No
Yes
Yes
FEATURES
8051 Central Processing Unit
128 × 8 RAM (80C31)
256 × 8 RAM (80C32)
Three 16-bit counter/timers
Boolean processor
Full static operation
Low voltage (2.7 V to 5.5 V@ 16 MHz) operation
Memory addressing capability
64k ROM and 64k RAM
Power control modes:
Clock can be stopped and resumed
Idle mode
Power-down mode
CMOS and TTL compatible
TWO speed ranges at VCC = 5 V
0 to 16 MHz
0 to 33 MHz
Three package styles
Extended temperature ranges
Dual Data Pointers
4 level priority interrupt
6 interrupt sources
Four 8-bit I/O ports
Full–duplex enhanced UART
Framing error detection
Automatic address recognition
Programmable clock out
Asynchronous port reset
Low EMI (inhibit ALE)
Wake-up from Power Down by an external interrupt
2000 Aug 07
2 853–2213 24293

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Philips Semiconductors
80C51 8-bit microcontroller family
128/256 byte RAM ROMless low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
Product specification
80C31/80C32
80C51/87C51 AND 80C31 ORDERING INFORMATION
ROMless
TEMPERATURE RANGE °C
AND PACKAGE
P80C31SBP N
0 to +70, Plastic Dual In-line Package
P80C31SBA A
0 to +70, Plastic Leaded Chip Carrier
P80C31SBB B
0 to +70, Plastic Quad Flat Pack
P80C31SFP N
–40 to +85, Plastic Dual In-line Package
P80C31SFA A
–40 to +85, Plastic Leaded Chip Carrier
P80C31SFB B
–40 to +85, Plastic Quad Flat Pack
VOLTAGE
RANGE
2.7 V to 5.5 V
2.7 V to 5.5 V
2.7 V to 5.5 V
2.7 V to 5.5 V
2.7 V to 5.5 V
2.7 V to 5.5 V
FREQ.
(MHz)
0 to 16
0 to 16
0 to 16
0 to 16
0 to 16
0 to 16
DRAWING
NUMBER
SOT129-1
SOT187-2
SOT307-2
SOT129-1
SOT187-2
SOT307-2
PART NUMBER DERIVATION
DEVICE NUMBER
OPERATING FREQUENCY, MAX (S)
P80C31
S = 16 MHz
P80C32
U = 33 MHz
TEMPERATURE RANGE (B)
B = 0_ to +70_C
F = –40_C to +85_C
80C32 ORDERING INFORMATION
ROMless
TEMPERATURE RANGE °C
AND PACKAGE
P80C32SBP N
0 to +70, Plastic Dual In-line Package
P80C32SBA A
0 to +70, Plastic Leaded Chip Carrier
P80C32SBB B
0 to +70, Plastic Quad Flat Pack
P80C32SFP N
–40 to +85, Plastic Dual In-line Package
P80C32SFA A
–40 to +85, Plastic Leaded Chip Carrier
P80C32SFB B
–40 to +85, Plastic Quad Flat Pack
P80C32UBA A
0 to +70, Plastic Leaded Chip Carrier
P80C32UBP N
0 to +70, Plastic Dual In-line Package
P80C32UBB B
0 to +70, Plastic Quad Flat Pack
P80C32UFA A
–40 to +85, Plastic Leaded Chip Carrier
P80C32UFP N
–40 to +85, Plastic Dual In-line Package
P80C32UFB B
–40 to +85, Plastic Quad Flat Pack
FREQ
MHz
16
16
16
16
16
16
33
33
33
33
33
33
PACKAGE (AA)
AA = PLCC
BB = PQFP
PN = PDIP
DRAWING
NUMBER
SOT129-1
SOT187-2
SOT307-2
SOT129-1
SOT187-2
SOT307-2
SOT187-2
SOT129-1
SOT307-2
SOT187-2
SOT129-1
SOT307-2
2000 Aug 07
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