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PDF UPD75512 Data sheet ( Hoja de datos )
| Número de pieza | UPD75512 | |
| Descripción | 4-BIT SINGLE-CHIP MICROCOMPUTER | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD75512(A)
4-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The µPD75512(A) is a 4-bit single-chip microcomputer which employs 75X series architecture, and its
performance is comparable to that of an 8-bit microcomputer.
In addition to its high-speed processing capabilities, the µPD75512(A) is also capable of processing data in
units of 1, 4, or in 8-bits. With its internally provided A/D converter and serial interface, theµPD75512(A) provides
the highest performance in its class.
Detailed functions are described in the following user‘s manual. Be sure to read it for designing.
µPD75516 User‘s Maual: IEM-5049
FEATURES
• Higher reliability than µPD75512
• Adequate I/O lines: 64
(can be provided with pull-up/pull-down resistors: 47)
• Built-in 8-bit serial interface: 2-ch
NEC standard serial bus interface (SBI) internally provided
• Built-in 8-bit A/D converter: 8-ch
• Variable instruction execution time function which is convenient for high-speed operation and power saving
· 0.95 µs/1.95 µs/15.3 µs (at 4.19 MHz operation),
· 122 µs (at 32.768 kHz operation)
• Program memory (ROM) size: 12,160 × 8 bits
• Data memory (RAM) size: 512 × 4 bits
• High-performance timer function: 4-ch
· 8-bit timer/event counter
· Watch timer
· 8-bit basic interval timer
· Timer/pulse generator: Capable of outputting 14-bit PWM
• Clock operation for reduced power consumption possible
(5 µA TYP. at 3 V operation)
• PROM version (µPD75P516) available
APPLICATIONS
Switable for automotive and transportation equipments, etc.
Document No. IC-2815A
(O. D. No. IC-8265A)
Date Published January 1994 P
Printed in Japan
The information in this document is subject to change without notice.
The mark 5 shows major revised points.
© NEC Corporation 1991
1 page  
µPD75512(A)
APPENDIX A. FUNCTIONAL DIFFERENCES AMONG µPD755XX(A) SERIES PRODUCTS ............. 59
APPENDIX B. DEVELOPMENT TOOLS ................................................................................................ 60
APPENDIX C. RELATED DOCUMENTS ................................................................................................ 61
5
5 Page 
µPD75512(A)
3.3 PIN INPUT/OUTPUT CIRCUITS
The following shows a simplified input/output circuit diagram for each pin of the µPD75512(A).
TYPE A
IN
VDD
P–ch
N–ch
TYPE D
data
output
disable
VDD
P–ch
OUT
N–ch
Input buffer of CMOS standard
TYPE B
IN
Push-pull output that can be set in a output
high-impedance state (both P-ch and N-ch are off)
TYPE E
data
output
disable
Type D
IN/OUT
Type A
Schmitt trigger input with hysteresis characteristics
TYPE B–C
VDD
P.U.R.
P–ch
IN
P.U.R.
enable
P.U.R. : Pull-Up Resistor
Schmitt trigger input with hysteresis characteristics
This input/output circuit consists of D-type push-pull
outputs and Type A input buffers.
TYPE E–B
P.U.R.
enable
VDD
P.U.R.
P–ch
data
output
disable
Type D
IN/OUT
Type A
P.U.R. : Pull-Up Resistor
Fig. 3-1 Pin Input/Output Circuits (1/3)
11
11 Page | ||
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