Philips
Semiconductors
80C51/87C51/80C31
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless low voltage (2.7V5.5V),
low power, high speed (33 MHz)
Product specification
Supersedes data of 1999 Apr 01
IC28 Data Handbook
2000 Jan 20
INTEGRATED CIRCUITS
Philips Semiconductors
Product specification
80C51/87C51/80C31
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, low voltage (2.7V5.5V),
low power, high speed (33 MHz)
2
2000 Jan 20
8530169 23001
DESCRIPTION
The Philips 8XC51/31 is a high-performance static 80C51 design
fabricated with Philips high-density CMOS technology with operation
from 2.7V to 5.5V.
The 8XC51/31 contains a 4k
8 ROM, a 128
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 8XC52/54/58/80C32, 8XC51FA/FB/FC/80C51FA,
and 8XC51RA+/RB+/RC+/80C51RA+ data sheet.
ROM/EPROM
Memory Size
(X by 8)
RAM Size
(X by 8)
Programmable
Timer Counter
(PCA)
Hardware
Watch Dog
Timer
80C31/8XC51
0K/4K
128
No
No
80C32/8XC52/54/58
0K/8K/16K/32K
256
No
No
80C51FA/8XC51FA/FB/FC
0K/8K/16K/32K
256
Yes
No
80C51RA+/8XC51RA+/RB+/RC+
0K/8K/16K/32K
512
Yes
Yes
8XC51RD+
64K
1024
Yes
Yes
FEATURES
8051 Central Processing Unit
4k
8 ROM (80C51)
128
8 RAM
Three 16-bit counter/timers
Boolean processor
Full static operation
Low voltage (2.7V to 5.5V@ 16MHz) 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 V
CC
= 5V
0 to 16MHz
0 to 33MHz
Three package styles
Extended temperature ranges
Dual Data Pointers
Security bits:
ROM (2 bits)
OTP/EPROM (3 bits)
Encryption array--64 bytes
4 level priority interrupt
6 interrupt sources
Four 8-bit I/O ports
Fullduplex 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 (8XC51)
Philips Semiconductors
Product specification
80C51/87C51/80C31
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, low voltage (2.7V5.5V),
low power, high speed (33 MHz)
2000 Jan 20
3
80C51/87C51 AND 80C31 ORDERING INFORMATION
MEMORY SIZE
4K
8
ROMless
TEMPERATURE RANGE
C
AND PACKAGE
VOLTAGE
RANGE
FREQ.
(MHz)
DWG.
#
ROM
P80C51SBPN
P80C31SBPN
0 to +70 Plastic Dual In line Package
2 7V to 5 5V
0 to 16
SOT129 1
OTP
P87C51SBPN
P80C31SBPN
0 to +70, Plastic Dual In-line Package
2.7V to 5.5V
0 to 16
SOT129-1
ROM
P80C51SBAA
P80C31SBAA
0 to +70 Plastic Leaded Chip Carrier
2 7V to 5 5V
0 to 16
SOT187 2
OTP
P87C51SBAA
P80C31SBAA
0 to +70, Plastic Leaded Chip Carrier
2.7V to 5.5V
0 to 16
SOT187-2
ROM
P80C51SBBB
P80C31SBBB
0 to +70 Plastic Quad Flat Pack
2 7V to 5 5V
0 to 16
SOT307 2
OTP
P87C51SBBB
P80C31SBBB
0 to +70, Plastic Quad Flat Pack
2.7V to 5.5V
0 to 16
SOT307-2
ROM
P80C51SFP N
P80C31SFP N
40 to +85 Plastic Dual In line Package
2 7V to 5 5V
0 to 16
SOT129 1
OTP
P87C51SFP N
P80C31SFP N
40 to +85, Plastic Dual In-line Package
2.7V to 5.5V
0 to 16
SOT129-1
ROM
P80C51SFA A
P80C31SFA A
40 to +85 Plastic Leaded Chip Carrier
2 7V to 5 5V
0 to 16
SOT187 2
OTP
P87C51SFA A
P80C31SFA A
40 to +85, Plastic Leaded Chip Carrier
2.7V to 5.5V
0 to 16
SOT187-2
ROM
P80C51SFB B
P80C31SFB B
40 to +85 Plastic Quad Flat Pack
2 7V to 5 5V
0 to 16
SOT307 2
OTP
P87C51SFB B
P80C31SFB B
40 to +85, Plastic Quad Flat Pack
2.7V to 5.5V
0 to 16
SOT307-2
ROM
P80C51UBAA
P80C31UBAA
0 to +70 Plastic Leaded Chip Carrier
5V
0 to 33
SOT187 2
OTP
P87C51UBAA
P80C31UBAA
0 to +70, Plastic Leaded Chip Carrier
5V
0 to 33
SOT187-2
ROM
P80C51UBPN
P80C31UBPN
0 to +70 Plastic Dual In line Package
5V
0 to 33
SOT129 1
OTP
P87C51UBPN
P80C31UBPN
0 to +70, Plastic Dual In-line Package
5V
0 to 33
SOT129-1
ROM
P80C51UBBB
P80C31UBBB
0 to +70 Plastic Quad Flat Pack
5V
0 to 33
SOT307 2
OTP
P87C51UBBB
P80C31UBBB
0 to +70, Plastic Quad Flat Pack
5V
0 to 33
SOT307-2
ROM
P80C51UFA A
P80C31UFA A
40 to +85 Plastic Leaded Chip Carrier
5V
0 to 33
SOT187 2
OTP
P87C51UFA A
P80C31UFA A
40 to +85, Plastic Leaded Chip Carrier
5V
0 to 33
SOT187-2
ROM
P80C51UFPN
P80C31UFPN
40 to +85 Plastic Dual In line Package
5V
0 to 33
SOT129 1
OTP
P87C51UFPN
P80C31UFPN
40 to +85, Plastic Dual In-line Package
5V
0 to 33
SOT129-1
ROM
P80C51UFBB
P80C31UFBB
40 to +85 Plastic Quad Flat Pack
5V
0 to 33
SOT307 2
OTP
P87C51UFBB
P80C31UFBB
40 to +85, Plastic Quad Flat Pack
5V
0 to 33
SOT307-2
80C51/87C51 AND 80C31 ORDERING INFORMATION
DEVICE NUMBER (P87C51)
OPERATING FREQUENCY, MAX (S)
TEMPERATURE RANGE (B)
PACKAGE (AA)
P80C51 ROM
S = 16 MHz
B = 0
_
to +70
_
C
AA = PLCC
P87C51 OTP
U = 33 MHz
F = 40
_
C to +85
_
C
BB = PQFP
P80C31 ROMless
PN = PDIP
Philips Semiconductors
Product specification
80C51/87C51/80C31
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, low voltage (2.7V5.5V),
low power, high speed (33 MHz)
2000 Jan 20
4
BLOCK DIAGRAM
SU00845
PSEN
EAV
PP
ALE/PROG
RST
XTAL1
XTAL2
VCC
VSS
PORT 0
DRIVERS
PORT 2
DRIVERS
RAM ADDR
REGISTER
RAM
PORT 0
LATCH
PORT 2
LATCH
ROM/EPROM
REGISTER
B
ACC
STACK
POINTER
TMP2
TMP1
ALU
TIMING
AND
CONTROL
INSTRUCTION
REGISTER
PD
OSCILLATOR
PSW
PORT 1
LATCH
PORT 3
LATCH
PORT 1
DRIVERS
PORT 3
DRIVERS
PROGRAM
ADDRESS
REGISTER
BUFFER
PC
INCRE-
MENTER
PROGRAM
COUNTER
DPTR'S
MULTIPLE
P1.0P1.7
P3.0P3.7
P0.0P0.7
P2.0P2.7
SFRs
TIMERS
8
8
16
Philips Semiconductors
Product specification
80C51/87C51/80C31
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, low voltage (2.7V5.5V),
low power, high speed (33 MHz)
2000 Jan 20
5
LOGIC SYMBOL
POR
T
0
POR
T
1
POR
T
2
POR
T
3
ADDRESS AND
DATA BUS
ADDRESS BUS
T2
T2EX
RxD
TxD
INT0
INT1
T0
T1
WR
RD
SECONDAR
Y
FUNCTIONS
RST
EA/V
PP
PSEN
ALE/PROG
V
SS
V
CC
XTAL1
XTAL2
SU00830
PIN CONFIGURATIONS
SU01063
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
T2/P1.0
T2EX/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
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
DUAL
IN-LINE
PACKAGE
PLASTIC LEADED CHIP CARRIER PIN FUNCTIONS
SU01062
LCC
6
1
40
7
17
39
29
18
28
Pin
Function
1
NIC*
2
P1.0/T2
3
P1.1/T2EX
4
P1.2
5
P1.3
6
P1.4
7
P1.5
8
P1.6
9
P1.7
10
RST
11
P3.0/RxD
12
NIC*
13
P3.1/TxD
14
P3.2/INT0
15
P3.3/INT1
Pin
Function
16
P3.4/T0
17
P3.5/T1
18
P3.6/WR
19
P3.7/RD
20
XTAL2
21
XTAL1
22
V
SS
23
NIC*
24
P2.0/A8
25
P2.1/A9
26
P2.2/A10
27
P2.3/A11
28
P2.4/A12
29
P2.5/A13
30
P2.6/A14
Pin
Function
31
P2.7/A15
32
PSEN
33
ALE
34
NIC*
35
EA/V
PP
36
P0.7/AD7
37
P0.6/AD6
38
P0.5/AD5
39
P0.4/AD4
40
P0.3/AD3
41
P0.2/AD2
42
P0.1/AD1
43
P0.0/AD0
44
V
CC
* NO INTERNAL CONNECTION
PLASTIC QUAD FLAT PACK
PIN FUNCTIONS
SU01064
PQFP
44
34
1
11
33
23
12
22
Pin
Function
1
P1.5
2
P1.6
3
P1.7
4
RST
5
P3.0/RxD
6
NIC*
7
P3.1/TxD
8
P3.2/INT0
9
P3.3/INT1
10
P3.4/T0
11
P3.5/T1
12
P3.6/WR
13
P3.7/RD
14
XTAL2
15
XTAL1
Pin
Function
16
V
SS
17
NIC*
18
P2.0/A8
19
P2.1/A9
20
P2.2/A10
21
P2.3/A11
22
P2.4/A12
23
P2.5/A13
24
P2.6/A14
25
P2.7/A15
26
PSEN
27
ALE
28
NIC*
29
EA/V
PP
30
P0.7/AD7
Pin
Function
31
P0.6/AD6
32
P0.5/AD5
33
P0.4/AD4
34
P0.3/AD3
35
P0.2/AD2
36
P0.1/AD1
37
P0.0/AD0
38
V
CC
39
NIC*
40
P1.0/T2
41
P1.1/T2EX
42
P1.2
43
P1.3
44
P1.4
* NO INTERNAL CONNECTION
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