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UPD75108 Datasheet

  • UPD75108

  • IC,MICROCONTROLLER,4-BIT,UPD75000 CPU,CMOS,QFP,64PIN,PLASTIC

  • nec   nec

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DATA SHEET
MOS INTEGRATED CIRCUIT
碌
PD75104, 75106, 75108
4-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
碌
PD75108 is a 4-bit single-chip microcomputer integrating timer/event counters, serial interface, and vector
interrupt function, in addition to a CPU, ROM, RAM, and I/O ports, on a single chip. Operating at high speeds,
the microcomputer allows data to be manipulated in units of 1, 4, or 8 bits. In addition, various bit manipulation
instructions are provided to reinforce I/O manipulation capability. Equipped with I/Os for interfacing with
peripheral circuits operating on a different supply voltage, outputs that can directly drive LEDs, and analog
inputs,
碌
PD75108 is suitable for controlling such systems as VTRs, acoustic products, button telephones, radio
communications equipment, and printers. A pin-compatible EPROM model is also available for evaluation of
system development and small-scale production of application systems.
Detailed functions are described in the following user鈥檚 manual. Be sure to read it for designing.
碌
PD751XX Series User鈥檚 Manual: IEM-922
FEATURES
鈥?/div>
Internal memory
鈥?Program memory (ROM)
: 8068
脳
8 bits (
碌
PD75108)
: 6016
脳
8 bits (
碌
PD75106)
: 4096
脳
8 bits (
碌
PD75104)
鈥?Data memory (RAM)
: 512
脳
4 bits (
碌
PD75108)
: 320
脳
4 bits (
碌
PD75106, 75104)
鈥?/div>
New architecture 鈥?5X series鈥?rivaling 8-bit microcomputers
鈥?/div>
43 systematically organized instructions
鈥?A wealth of bit manipulation instructions
鈥?8-bit data transfer, compare, operation, increment, and decrement instructions
鈥?1-byte relative branch instructions
鈥?GETI instruction executing 2-/3-byte instruction with one byte
鈥?/div>
High speed. Minimum instruction execution time: 0.95
碌
s (at 4.19 MHz), 5 V
鈥?/div>
Power-saving, instruction time change function: 0.95
碌
s/1.91
碌
s/15.3
碌
s (at 4.19 MHz)
鈥?/div>
I/O port pins as many as 58
鈥?/div>
Three channels of 8-bit timers
鈥?/div>
8-bit serial interface
鈥?/div>
Multiplexed vector interrupt function
鈥?/div>
Model with PROM is available:
碌
PD75P108B (One-time PROM, EPROM)
Unless there are differences among
碌
PD75104, 75106, and 75108 functions,
碌
PD75108 is treated as the
representative model throughout this manual.
The information in this document is subject to change without notice.
Document No. IC-2520B
(O. D. No. IC-6906B)
Date Published January 1994 P
Printed in Japan
The mark
5
shows major revised points.
漏
NEC Corporation 1989

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