Philips Semiconductors
Product specification
Low voltage 8-bit microcontrollers with
UART
CONTENTS
1
2
2.1
3
4
5
6
7
7.1
7.2
8
8.1
8.2
9
9.1
9.2
9.3
9.4
10
10.1
10.2
10.3
10.4
11
12
12.1
12.2
12.3
12.4
12.5
13
13.1
13.2
FEATURES
GENERAL DESCRIPTION
Versions: P80CL31 and P80C51
APPLICATIONS
ORDERING INFORMATION
BLOCK DIAGRAM
FUNCTIONAL DIAGRAM
PINNING INFORMATION
Pinning
Pin description
FUNCTIONAL DESCRIPTION OVERVIEW
General
CPU timing
MEMORY ORGANIZATION
Program Memory
Data Memory
Special Function Registers (SFRs)
Addressing
I/O FACILITIES
Ports
Port options
Port 0 options
SET/RESET options
TIMERS/EVENT COUNTERS
REDUCED POWER MODES
Idle mode
Power-down mode
Wake-up from Power-down mode
Power Control Register (PCON)
Status of external pins
STANDARD SERIAL INTERFACE SIO0:
UART
Multiprocessor communications
Serial Port Control and Status Register
(S0CON)
25
26
26.1
26.2
26.3
27
28
13.3
14
14.1
14.2
14.3
15
16
16.1
16.2
17
17.1
17.2
18
19
20
21
22
23
24
24.1
24.2
24.3
Baud rates
P80CL31; P80CL51
INTERRUPT SYSTEM
External interrupts INT2 to INT9
Interrupt priority
Interrupt registers
OSCILLATOR CIRCUITRY
RESET
External reset using the RST pin
Power-on-reset
MASK OPTIONS FOR P80CL31 AND P80C51
P80CL31: ROMless version
P80C51: 5V standard version
SPECIAL FUNCTION REGISTERS
OVERVIEW
INSTRUCTION SET
LIMITING VALUES
DC CHARACTERISTICS FOR P80CL31 AND
P80CL51
DC CHARACTERISTICS FOR P80C51
AC CHARACTERISTICS
P85CL000HFZ ‘PIGGY-BACK’
SPECIFICATION
General description
Feature differences/additional features with
respect to P80CL51
Common specification/feature differences
between P85CL000HFZ and
P83CL410/P80CL51
PACKAGE OUTLINES
SOLDERING
Introduction
DIP
QFP and VSO
DEFINITIONS
LIFE SUPPORT APPLICATIONS
1997 Apr 15
2
Philips Semiconductors
Product specification
Low voltage 8-bit microcontrollers with
UART
1
FEATURES
2
•
Full static 80C51 Central Processing Unit
•
8-bit CPU, ROM, RAM, I/O in a 40-lead DIP,
40-lead VSO or 44-lead QFP package
•
128 bytes on-chip RAM Data Memory
•
4 kbytes on-chip ROM Program Memory for P80CL51
•
External memory expandable up to 128 kbytes: RAM up
to 64 kbytes and ROM up to 64 kbytes
•
Four 8-bit ports; 32 I/O lines
•
Two 16-bit Timer/Event counters
•
On-chip oscillator suitable for RC, LC, quartz crystal or
ceramic resonator
•
Thirteen source, thirteen vector, nested interrupt
structure with two priority levels
•
Full duplex serial port (UART)
•
Enhanced architecture with:
– non-page oriented instructions
– direct addressing
– four 8-byte RAM register banks
– stack depth limited only by available internal RAM
(maximum 128 bytes)
– multiply, divide, subtract and compare instructions
•
Reduced power consumption through Power-down and
Idle modes
•
Wake-up via external interrupts at Port 1
•
Frequency range: 0 to 16 MHz (P80C51: 3.5 MHz min.)
•
Supply voltage: 1.8 to 6.0 V (P80C51: 5.0 V
±10%)
•
Very low current consumption
•
Operating ambient temperature range:
−40
to +85
°C.
3
APPLICATIONS
P80CL31; P80CL51
GENERAL DESCRIPTION
The P80CL31; P80CL51 (hereafter generally referred to
as the P80CLx1) is manufactured in an advanced CMOS
technology. The P80CLx1 has the same instruction set as
the 80C51, consisting of over 100 instructions:
49 one-byte, 46 two-byte, and 16 three-byte. The device
operates over a wide range of supply voltages and has low
power consumption; there are two software selectable
modes for power reduction: Idle and Power-down.
For emulation purposes, the P85CL000 (piggy-back
version) with 256 bytes of RAM is recommended.
This data sheet details the specific properties of the
P80CL31; P80CL51. For details of the 80C51 core see
“Data Handbook IC20”.
2.1
Versions: P80CL31 and P80C51
The P80CL31 is the ROMless version of the P80CL51.
The mask options on the P80CL31 are fixed as follows:
•
All ports have option ‘1S’ (standard, HIGH after reset)
•
Oscillator option: Oscillator 3
•
Power-on-reset option: OFF.
The P80C51 is a restricted-voltage range version of the
P80CL51. The operating voltage is 5.0 V
±10%.
The P80CLx1 is especially suited for real-time applications
such as instrumentation, industrial control, intelligent
computer peripherals and consumer products.
The P80CLx1 also functions as an arithmetic processor
having facilities for both binary and BCD arithmetic plus
bit-handling capabilities.
1997 Apr 15
3
Embedded System
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