How it Works
Philips
Loading...
PCF84C85AT
Datasheet
20 pgs118.43 Kb0
Table of contents
Loading...

Philips PCF84C85AT Datasheet

INTEGRATED CIRCUITS
DATA SH EET
PCF84C85A
Microcontroller with extended I/O
Product specification Supersedes data of May 1994 File under Integrated Circuits, IC14
1996 Nov 21
Philips Semiconductors Product specification
Microcontroller with extended I/O PCF84C85A

CONTENTS

1 FEATURES 2 GENERAL DESCRIPTION 3 ORDERING INFORMATION 4 BLOCK DIAGRAM 5 PINNING INFORMATION
5.1 Pinning
5.2 Pin description 6 PARALLEL PORTS 7 INSTRUCTION SET 8 SUMMARY OF DERIVATIVE PORTS AND
REGISTERS 9 ROM MASK OPTIONS 10 HANDLING 11 LIMITING VALUES 12 DC CHARACTERISTICS 13 AC CHARACTERISTICS
13.1 I2C-bus interface characteristics 14 PACKAGE OUTLINES 15 SOLDERING
15.1 Introduction
15.2 DIP
15.2.1 Soldering by dipping or by wave
15.2.2 Repairing soldered joints
15.3 SO and VSO
15.3.1 Reflow soldering
15.3.2 Wave soldering
15.3.3 Repairing soldered joints 16 DEFINITIONS 17 LIFE SUPPORT APPLICATIONS 18 PURCHASE OF PHILIPS I2C COMPONENTS
Philips Semiconductors Product specification
Microcontroller with extended I/O PCF84C85A

1 FEATURES

• 8-bit CPU, ROM, RAM, I/O in a single 40-lead package
• 8 kbytes ROM
• 256 bytes RAM
• I2C-bus interface with multi-master capability
• Over 100 instructions (based on MAB8048)
all of 1 or 2 cycles
• 32 quasi-bidirectional I/O port lines
• 8-bit programmable timer/event counter 1
• Three single-level vectored interrupts:
– external – 8-bit programmable timer/event counter 1
2
C-bus
–I
• Two test inputs, one of which also serves as the external
interrupt input
• Stop and Idle modes
• Logic supply voltage: VDD= 2.5 to 5.5 V
• Clock frequency: 1 to 16 MHz
• Operating temperature: −40 to +85 °C
• Manufactured in silicon gate CMOS process.

2 GENERAL DESCRIPTION

This data sheet details the specific properties of the PCF84C85A. The shared properties of the PCF84CxxxA family of microcontrollers are described in the
“PCD84xxxA family”
conjunction with this publication. The PCF84C85A is a general purpose CMOS
microcontroller with emphasis on input/output. It provides 32 I/O port lines, 8 kbytes of program memory and 256 bytes of RAM. In addition to the 32 I/O port lines, the microcontroller provides an on-chip I two-line serial bus extends the microcontroller's capabilities when implemented with the powerful I2C-bus peripherals.These include LCD drivers, telecom circuits, AD/DA converters, clock/calendar circuits, EEPROM and RAM and are listed in
Peripherals”
The instruction set is based on that of the MAB8048 and is a sub-set of that listed in the sheet.
.
data sheet which should be read in
2
C-bus interface. This
“Data Handbook IC12, I2C
“PCF84CXXXA family”
data

3 ORDERING INFORMATION (see note 1)

TYPE
NUMBER
PCF84C85AP DIP40 plastic dual in-line package; 40 leads (600 mil) SOT 129-1 PCF84C85AT VSO40 plastic very small outline package; 40 leads SOT 158-1
Note
1. Please refer to the Order Entry Form (OEF) for this device for the full type number to use when ordering. This type
number will also specify the required program and the ROM mask options.
NAME DESCRIPTION VERSION
PACKAGE
Philips Semiconductors Product specification
Microcontroller with extended I/O PCF84C85A

4 BLOCK DIAGRAM

8
DERIVATIVE
DP1.0 to DP1.6
8
DERIVATIVE
DP0.0 to DP0.7
PORT 0
P0.0 to P0.7
8 kbytes
DECODE
RESIDENT ROM
8 8
PORT 1
P1.0 to P1.7
PORT 1
BUFFER
DERIVATIVE
PORT 0
BUFFER
DERIVATIVE
BUFFER
PORT 0
BUFFER
PORT 1
PORT 1
FLIP-FLOPS
PORT 0
FLIP-FLOPS
FLIP-FLOPS
INTERNAL
FLIP-FLOPS
BANK
MEMORY
FLIP-FLOPS
FREQ.
CLOCK
30
WORD
STATUS
PROGRAM
LOWER
COUNTER
PROGRAM
HIGHER
COUNTER
PROGRAM
EVENT
TIMER/
COUNTER
32
T1
8
8
8
5 888 8
88 8
8
8
8
8
REGISTER 0
REGISTER 1
REGISTER 2
MULTIPLEXER
RAM
ADDRESS
REGISTER 1
TEMPORARY
REGISTER 2
TEMPORARY
REGISTER 3
REGISTER 4
REGISTER 5
REGISTER 6
DECOD
REGISTER
&
REGISTER
INSTRUCTION
LOGIC UNIT
ARITHMETIC
REGISTER 7
8-LEVEL STACK
(VARIABLE LENGTH)
DECODER
DATA STORE
REGISTER BANK
OPTIONAL SECOND
E
FLAG
T1
INT / T0
TIMER
BRANCH
CONDITIONAL
ADJUST
DECIMAL
MLA596
256 bytes
RESIDENT RAM ARRAY
TEST
CARRY
ACC
ACC BIT
LOGIC
XTAL 2XTAL 1RESETINT / T0
XTAL
OSCILLATOR
CONTROL & TIMING
INTERRUPT INITIALIZE
handbook, full pagewidth
Fig.1 Block diagram.
C-BUS
2
I
INTERFACE
1
8
8
SDA/P2.3
SCLK
PORT 2
BUFFER
CLOCK DATA
PORT 2
FLIP-FLOPS
1996 Nov 21 4
ACCUMULATOR
timer interrupt
LOGIC
INTERRUPT
SIO/
derivative
interrupt
STOP
external interrupt
IDLE
Philips Semiconductors Product specification
Microcontroller with extended I/O PCF84C85A

5 PINNING INFORMATION

5.1 Pinning

handbook, halfpage
INT / T0
XTAL1 XTAL2
P0.0 P0.1
P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 P1.0 P1.1 P1.2 P1.3 P1.4
P1.5
P1.6
P1.7
V
SS
1 2 3 4 5 6 7 8 9
10
PCF84C85A
11 12
13
15 16 17 18 19 20
Fig.2 Pin configuration.
MLA597
40 39 38 37 36 35 34 33 32 31 30 29 28 2714 26 25 24 23 22 21
V
DD
T1 SCLK
SDA / P2.3 DP1.6
DP1.5
DP1.4 DP1.3
DP1.2 DP1.1
DP1.0 DP0.7 DP0.6
DP0.5 DP0.4 DP0.3
DP0.2 DP0.1 DP0.0 RESET

5.2 Pin description Table 1 DIP40 and VSO40 packages.

SYMBOL PIN TYPE DESCRIPTION
INT/T0 1 I Interrupt/Test 0 P0.0 to P0.7 2 to 9 I/O 8 bits of Port 0: 8-bit
quasi-bidirectional I/O port
P1.0 to P1.7 10 to 17 I/O 8 bits of Port 1: 8-bit
quasi-bidirectional I/O port
XTAL1 18 I XTAL input: crystal
oscillator/external clock input
XTAL2 19 O XTAL output: crystal
oscillator output
V
SS
20 P ground RESET 21 I Reset input DP0.0 to
DP0.7
22 to 29 I/O Derivative Port 0:
quasi-bidirectional I/O port (8-bit)
DP1.0 to DP1.6
30 to 36 I/O Derivative Port 1:
quasi-bidirectional I/O lines (7-bit)
SDA/P2.3 37 I/O bidirectional data line
2
of the I
C-bus interface; or Port 2 quasi-bidirectional I/O port (1 bit only)
SCLK 38 I/O bidirectional clock
2
line of the I
C-bus
interface
T1 39 I Test 1: count input of
8-bit timer/event counter 1
V
DD
40 P positive supply

6 PARALLEL PORTS

Of the standard quasi-bidirectional I/O ports, Port 2 is incomplete, providing only line SDA/P2.3 that is shared with the I2C-bus interface. In addition to the standard ports, two derivative I/O ports are available:
• Derivative Port of 8 lines (DP0.0 to DP0.7)
• Derivative Port of 7 lines (DP1.0 to DP1.6).
Missing bits of incomplete ports, i.e. P2.0 to P2.2 and DP1.7, are fixed at zero in the corresponding registers.

7 INSTRUCTION SET

See
“PCF84CXXXA family”
data sheet for a complete
description of the instruction set.
Philips Semiconductors Product specification
Microcontroller with extended I/O PCF84C85A

8 SUMMARY OF DERIVATIVE PORTS AND REGISTERS Table 2 Derivative Ports.

DERIVATIVE
ADDRESS
00H R DP0L Derivative Port 0 lines 01H R DP1L Derivative Port 1 lines 02H R/W DP0FF Derivative Port 0 flip-flops 03H R/W DP1FF Derivative Port 1 flip-flops 04H −−
Table 3 Derivative Registers.
REGISTER
MNEMONIC
DP0L D0.7 D0.6 D0.5 D0.4 D0.3 D0.2 D0.1 D0.0 DP1L 0 D1.6 D1.5 D1.4 D1.3 D1.2 D1.1 D1.0 DP0FF F0.7 F0.6 F0.5 F0.4 F0.3 F0.2 F0.1 F0.0 DP1FF 0 F1.6 F1.5 F1.4 F1.3 F1.2 F1.1 F1.0

9 ROM MASK OPTIONS

Program/data Any mix of instructions and data up to ROM size of
TYPE
76543210
ROM CODE OPTION
REGISTER
MNEMONIC
DESCRIPTION
8 kbytes.
Port Output
P0.0 to P0.7 standard open-drain push-pull P1.0 to P1.7 standard open-drain push-pull SDA/P2.3 − open-drain − DP0.0 to DP0.7 standard open-drain push-pull DP1.0 to DP1.7 standard open-drain push-pull
Port State after reset
P0.0 to P0.7 set reset − P1.0 to P1.7 set reset − SDA/P2.3 set −− DP1.0 to DP1.7 set reset − DP2.0 to DP2.2 set reset −
Oscillator
Transconductance LOW (g
) MEDIUM (gmM) HIGH (gmH)
mL
Loading...
+ 14 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use