Document
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
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
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
3
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
BLOCK DIAGRAM
VCC VSS
RAM ADDR REGISTER
RAM
P0.0–P0.7
PORT 0 DRIVERS
PORT 0 LATCH
P2.0–P2.7
PORT 2 DRIVERS
PORT 2 LATCH
ROM/EPROM
B REGISTER
ACC TMP2
TMP1
STACK POINTER
8
PROGRAM ADDRESS REGISTER
ALU PSW
INSTRUCT.