DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD7564A, 7564A(A)
4-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The
µ
PD7564A is a 4-bit single-chip microcomputer with a small number of ports in a small package, which is
of low-order models,
µ
PD7554 and 7564 sub-series in the
µ
PD7500 series. With an on-chip serial interface, it per-
forms efficient dispersion processing of a system as a sub-CPU for the 75X series or 78k series.
The
µ
PD7564A has outputs to directly drive a triac and LEDs and allows selection among many types of input/
output circuits using their respective mask options, sharply reducing the number of external circuits required.
Details of functions are described in the User’s Manual shown below. Be sure to read in design.
µ
PD7554, 7564 User’s Manual: IEM-1111D
FEATURES
•
47 types of instructions
(Subset of
µ
PD7500H SET B)
•
Instruction cycle
Ceramic oscillation : 2.86
µ
s
(in operation at 700 kHz, 5 V)
•
Program memory (ROM) capacity: 1024
×
8 bits
•
Data memory (RAM) capacity: 64
×
4 bits
•
Test source: One external source and two internal
sources
•
8-bit timer/event counter
•
15 I/O lines (Total output current of all pins: 100 mA)
• Can directly drive a triac and a LED: P80 to P82
• Can directly drive LEDs: P100 to P103 and P110 to
P113
• Mask option function provided for every port
•
8-bit serial interface
•
Standby (STOP/HALT) function
•
Low supply voltage data retaining function for data
memory
•
Built-in ceramic oscillator for system clock
•
Low power dissipation
•
Single power supply (2.7 to 6.0 V)
PIN CONFIGURATION (TOP VIEW)
P00/INT0
P01/SCK
P02/SO
P03/SI
P80
P81
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
SS
P113
P112
P111
P110
P103
P102
P101
P100
RESET
µ
PD7564A
APPLICATIONS
µ
PD7564A
: PPCs, printers, VCRs, audio equipments,
etc.
µ
PD7564A(A) : Automotive and transportation equip-
ments, etc.
P82
CL2
CL1
V
DD
5
The quality grade and absolute maximum ratings of the
µ
PD7564A and the
µ
PD7564A(A) differ.
Except where specifically noted, explanations here concern the
µ
PD7564A as a representative product.
If you are using the
µ
PD7564A(A), use the information presented here after the checking the func-
tional differences.
The information in this document is subject to change without notice.
Document No. IC-2401C
(O. D. No. IC-7834C)
Date Published December 1994 P
Printed in Japan
The mark
5
shows major revised points.
©
1994
µ
PD7564A, 7564A(A)
ORDERING INFORMATION
Ordering Code
Package
20-pin plastic shrink DIP (300 mil)
20-pin plastic SOP (300 mil)
20-pin plastic shrink DIP (300 mil)
20-pin plastic SOP (300 mil)
Quality Grade
Standard
Standard
Special
Special
5
5
µ
PD7564ACS-×××
µ
PD7564AG-×××
µ
PD7564ACS(A)-×××
µ
PD7564AG(A)-×××
Caution
Remarks
Be sure to specify a mask option when ordering this device.
"×××" is a ROM code number.
Please refer to “Quality grade on NEC Semiconductor Devices” (Document number IEI-1209) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
2
P01/SCK
INT0
P02/SO
P03/SI
P00/INT0
TIMER/EVENT
COUNTER
TEST
CONTROL
SERIAL
INTERFACE
CLOCK
CONTROL
CP
BLOCK DIAGRAM OF
µ
PD7564A
CL
PROGRAM COUNTER (10)
ALU
C
A (4)
PORT0
BUFFER
4
P00–P03
GENERAL REGISTERS
H (2)
INSTRUCTION
DECODER
STACK POINTER (6)
L (4)
PROGRAM MEMORY
PORT8
LATCH
BUFFER
3
P80–P82
1024
×
8 BITS
PORT10
LATCH
BUFFER
DATA MEMORY
64
×
4 BITS
PORT11
LATCH
BUFFER
4
P100–P103
CL
φ
SYSTEM
CLOCK
GENERATOR
STANDBY
CONTROL
4
P110–P113
CL1
V
DD
V
SS
CL2
RESET
µ
PD7564A, 7564A(A)
3
µ
PD7564A, 7564A(A)
CONTENTS
1. PIN FUNCTIONS ......................................................................................................................................... 6
1.1
1.2
1.3
1.4
1.5
1.6
1.7
PORT FUNCTIONS ............................................................................................................................................... 6
OTHER THAN PORTS .......................................................................................................................................... 6
PIN MASK OPTION .............................................................................................................................................. 7
CAUTION ON USE OF P00/INT0 PIN AND RESET PIN ................................................................................... 7
PIN INPUT/OUTPUT CIRCUITS .......................................................................................................................... 8
RECOMMENDED CONNECTION OF UNUSED
µ
PD7564A PINS .................................................................. 11
OPERATION OF INPUT/OUTPUT PORTS ....................................................................................................... 11
2. INTERNAL BLOCK FUNCTIONS ............................................................................................................ 13
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
PROGRAM COUNTER (PC): 10 BITS ................................................................................................................ 13
STACK POINTER (SP): 6 BITS .......................................................................................................................... 14
PROGRAM MEMORY (ROM): 1024 WORDS
×
8 BITS ................................................................................... 15
GENERAL REGISTER ......................................................................................................................................... 15
DATA MEMORY (RAM): 64
×
4 BITS ............................................................................................................... 16
ACCUMULATOR (A): 4 BITS ............................................................................................................................. 17
ARITHMETIC LOGIC UNIT (ALU): 4 BITS ........................................................................................................ 17
PROGRAM STATUS WORD (PSW): 4 BITS .................................................................................................... 17
2.9 SYSTEM CLOCK GENERATOR ......................................................................................................................... 18
2.10 CLOCK CONTROL CIRCUIT ............................................................................................................................... 19
2.11 TIMER/EVENT COUNTER ................................................................................................................................. 20
2.12 SERIAL INTERFACE ........................................................................................................................................... 21
2.13 TEST CONTROL CIRCUIT .................................................................................................................................. 23
3. STANDBY FUNCTIONS ........................................................................................................................... 25
3.1
3.2
3.3
3.4
3.5
STOP MODE ........................................................................................................................................................ 25
CANCELLING THE HALT MODE ....................................................................................................................... 25
CANCELLING STOP MODE BY RESET INPUT ................................................................................................ 26
CANCELLING HALT MODE BY TEST REQUEST FLAG ................................................................................. 26
CANCELLING HALT MODE BY RESET INPUT ................................................................................................ 26
4. RESET FUNCTIONS ................................................................................................................................. 27
4.1
DETAILS OF INITIALIZATION ........................................................................................................................... 27
5.
µ
PD7564A INSTRUCTION SET ............................................................................................................... 28
6. ELECTRICAL SPECIFICATIONS .............................................................................................................. 33
7. CHARACTERISTICS CURVES .................................................................................................................. 40
8.
µ
PD7564A APPLIED CIRCUITS ............................................................................................................... 43
9. PACKAGE INFORMATION ....................................................................................................................... 45
4
µ
PD7564A, 7564A(A)
10. RECOMMENDED PACKAGING PATTERN OF SOP (REFERENCE) ..................................................... 49
11. RECOMMENDED SOLDERING CONDITIONS ....................................................................................... 50
APPENDIX A. COMPARISON BETWEEN SUB-SERIES PRODUCT FUNCTIONS..................................... 51
APPENDIX B. DEVELOPMENT TOOLS ........................................................................................................ 52
APPENDIX C. RELATED DOCUMENTS .......................................................................................................... 54
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