4283 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
REJ03B0109-0101
Rev.1.01
2006.03.20
DESCRIPTION
The 4283 Group enables fabrication of 8
×
7 key matrix and has
the followin timers;
• an 8-bit timer which can be used to set each carrier wave and
has two reload register
• an 8-bit timer which can be used to auto-control and has a
reload register.
FEATURES
• Number of basic instructions ............................................. 68
• Minimum instruction execution time ............................ 8.0
µ
s
(at f(X
IN
) = 4.0 MHz, system clock = f(X
IN
)/8)
• 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 D
4
–D
7
, E
0
–E
2
, G
0
–G
3
) .... 11
• I/O port (ports D, E, G, CARR) .......................................... 16
• Oscillation circuit ..................................... Ceramic resonance
• Watchdog timer
• Power-on reset circuit
• Voltage drop detection circuit ......................... Typical:1.50 V
(system reset)
APPLICATION
Various remote control transmitters
Part number
M34283G2-XXXGP
M34283G2GP
ROM size
(× 9 bits)
2048 words
2048 words
RAM size
(× 4 bits)
64 words
64 words
Package
20P2F-A
20P2F-A
ROM type
QzROM
QzROM (blank)
Rev.1.01 Mar 20, 2006
REJ03B0109-0101
page 1 of 62
RENESAS [ RENESAS TECHNOLOGY CORP ]
