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UPD17235

NEC
Part Number UPD17235
Manufacturer NEC
Description 4-BIT SINGLE-CHIP MICROCONTROLLER
Published Apr 17, 2005
Detailed Description DATA SHEET MOS INTEGRATED CIRCUIT µPD17230,17231,17232,17233,17234,17235,17236 4-BIT SINGLE-CHIP MICROCONTROLLER FOR S...
Datasheet PDF File UPD17235 PDF File

UPD17235
UPD17235

Overview
DATA SHEET MOS INTEGRATED CIRCUIT µPD17230,17231,17232,17233,17234,17235,17236 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER DESCRIPTION µPD17230, 17231, 17232, 17233, 17234, 17235, 17236 (hereafter called µPD17236 subseries) are 4-bit singlechip microcontrollers for small general-purpose infrared remote control transmitters.
It employs a 17K architecture of general-purpose register type devices for the CPU, and can directly execute operations between memories instead of the conventional method of executing operations through the accumulator.
Moreover, all the instructions are 16-bit 1-word instructions which can be programmed efficiently.
In addition, a one-time PROM model, µPD17P236Note, to which data can be written only once, is also available.
It is convenient either for evaluating the µPD17236 subseries programs or small-scale production of application systems.
Note Under development Detailed functions are described in the following manual.
Be sure to read this manual when designing your system.
µPD172×× Subseries User's Manual: U12795E FEATURES • Infrared remote controller carrier generator circuit (REM output) • 17K architecture: General-purpose register system • Program memory (ROM), Data memory (RAM) µPD17230 Program 4 K bytes 223 × 4 bits memory (ROM) (2048 × 16) Data memory (RAM) µPD17231 8 K bytes (4096 × 16) µPD17232 12 K bytes (6144 × 16) µPD17233 16 K bytes (8192 × 16) µPD17234 20 K bytes µPD17235 24 K bytes µPD17236 32 K bytes (10240 × 16) (12288 × 16) (16384 × 16) • 8-bit timer : 1 channel • Basic internal timer/Watchdog timer : 1 channel • Instruction execution time (can be changed in two steps) at fX = 4 MHz at fX = 8 MHz • External interrupt pin (INT) • I/O pins • Supply voltage : 4 µs (high-speed mode)/8 µs (ordinary mode) : 2 µs (high-speed mode)/4 µs (ordinary mode) : 1 : 21 : VDD = 2.
2 to 3.
6 V (at fX = 8 MHz (high-speed mode)) VDD = 2.
0 to 3.
6 V (at fX = 4 MHz (high-speed mode)...


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