M34286 Datasheet, PDF (1/66 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4286 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
REJ03B0251-0100
Rev.1.00
Aug 06, 2008
DESCRIPTION
The 4286 Group is a 4-bit single-chip microcomputer designed
with CMOS technology for single-function remote control
transmitters. The computer is equipped with an 8-bit timer (has
two reload registers) can be set various carrier wave and an 8-
bit timer (has a reload register) can be control the carrier wave
output automatically.
The various microcomputers in the 4286 Group include variations
of type as shown in the table below.
FEATURES
• Number of basic instructions ............................................. 72
• Minimum instruction execution time ............................ 2.0 µs
(at f(XIN) = 4.0 MHz, system clock = f(XIN)/2)
• Supply voltage ................................................. 1.8 V to 3.6 V
• Subroutine nesting ..................................................... 4 levels
• Timer
Timer 1 ................................................................... 8-bit timer
(This has a reload register and carrier wave output auto-control
function)
Timer 2 ................................................................... 8-bit timer
(This has two reload registers and carrier wave output function)
• Logic operation function (XOR, OR, AND)
• RAM back-up function
• Key-on wakeup function (ports D0–D7, E0–E2, G0–G3) .... 15
• I/O port (ports D, E, G, CARR) .......................................... 16
• Oscillation circuit ..................................... Ceramic resonance
• Watchdog timer
• Power-on reset circuit
• Voltage drop detection circuit
Before CLVD instruction execution
Reset occurrence ............................... 1.5 V (Ta=25 °C)
Reset release .................................... 1.7 V (Ta=25 °C)
After CLVD instruction execution
Reset occurrence/Reset release ........ 1.7 V (Ta=25 °C)
APPLICATION
Consumer remote control transmitters
Part number
M34286G2-XXXGP
M34286G2GP
ROM size
(× 9 bits)
2048 words
2048 words
RAM size
(× 4 bits)
64 words
64 words
Package
PLSP0020JB-A (20P2F-A)
PLSP0020JB-A (20P2F-A)
ROM type
QzROM
QzROM (blank)
Rev.1.00 Aug 06, 2008 page 1 of 64
REJ03B0251-0100