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Número de pieza UPD17236MC
Descripción 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
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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 single-
chip 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 µPD17231 µPD17232 µPD17233 µPD17234 µPD17235 µPD17236
Program
4 K bytes 8 K bytes 12 K bytes 16 K bytes 20 K bytes 24 K bytes 32 K bytes
memory (ROM) (2048 × 16) (4096 × 16) (6144 × 16) (8192 × 16) (10240 × 16) (12288 × 16) (16384 × 16)
Data memory 223 × 4 bits
(RAM)
• 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
: 4 µs (high-speed mode)/8 µs (ordinary mode)
at fX = 8 MHz
: 2 µs (high-speed mode)/4 µs (ordinary mode)
• External interrupt pin (INT)
:1
• I/O pins
: 21
• Supply voltage
: 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))
• Low-voltage detector circuit (mask option)
Unless otherwise specified, the µPD17236 is treated as the representative model throughout this document.
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. U14360EJ1V0DS00 (1st edition)
Date Published July 1999 N CP (K)
Printed in Japan
©
1999

1 page




UPD17236MC pdf
µPD17230, 17231, 17232, 17233, 17234, 17235, 17236
BLOCK DIAGRAM
P0A0
P0A1
P0A2
P0A3
P0B0
P0B1
P0B2
P0B3
P0C0
P0C1
P0C2
P0C3
P0D0
P0D1
P0D2
P0D3
P0E0
P0E1
P0E2
P0E3
P0A
P0B
P0C
P0D
P0E
P1A0Note
P1A
RF
RAM
223 × 4 bits
SYSTEM REG.
ALU
ROM
µPD17230 : 2048 × 16 bits
µPD17231 : 4096 × 16 bits
µPD17232 : 6144 × 16 bits
µPD17233 : 8192 × 16 bits
µPD17234 : 10240 × 16 bits
µPD17235 : 12288 × 16 bits
µPD17236 : 16384 × 16 bits
Instruction
Decoder
Program Counter
Stack (5 levels)
Basic Interval/
Watchdog Timer
Remote
Control
Divider
REM
8-bit Timer
Interrupt
Controller
Reset
Controller
INT
RESET
Power
Supply
Circuit
CPU Clock
OSC
VDD
GND
XIN
XOUT
Note Input or output selectable by mask option.
Data Sheet U14360EJ1V0DS00
5

5 Page





UPD17236MC arduino
µPD17230, 17231, 17232, 17233, 17234, 17235, 17236
1.3 Processing of Unused Pins
Process the unused pins as follows:
Table 1-1. Processing of Unused Pins
Pin
P0A0-P0A3
P0B0-P0B3
P0C0-P0C3
P0D0-P0D3
P0E0-P0E3
P1A0
REM
INT
IC1, IC2
Recommended Connection
Leave unconnected.
Input: Individually connect to VDD or GND via resistor.
Output: Leave unconnected.
Connect to GND.
Leave unconnected.
Connect to GND.
These pins cannot be used.
Leave unconnected.
Data Sheet U14360EJ1V0DS00
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