M34280M1 Datasheet, PDF (1/47 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS

MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
DESCRIPTION
The 4280 Group is a 4-bit single-chip microcomputer designed
with CMOS technology for remote control transmitters. The 4280
Group has 7 carrier waves and enables fabrication of 8 × 7 key
matrix.
FEATURES
• Number of basic instructions ............................................. 62
• Minimum instruction execution time ............................ 8.0 µs
(at f(XIN) = 4.0 MHz, system clock = f(XIN)/8, VDD=3.0 V)
• Supply voltage ................................................. 1.8 V to 3.6 V
• Subroutine nesting ..................................................... 4 levels
• Timer
Timer 1 ................................................................... 8-bit timer
with a reload register and carrier wave output auto-control
function
• Carrier wave output function (port CARR)
f(XIN), f(XIN)/4, f(XIN)/8, f(XIN)/12
f(XIN)/64, f(XIN)/96, “H” output fixed
• Logic operation function (XOR, OR, AND)
• RAM back-up function
• Key-on wakeup function (ports D7, E0–E2, G0–G3) ............. 8
• 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
APPLICATION
Various remote control transmitters
Product
M34280M1-XXXFP
M34280M1-XXXGP
M34280E1FP
M34280E1GP
ROM (PROM) size
(× 9 bits)
1024 words
1024 words
1024 words
1024 words
RAM size
(× 4 bits)
32 words
32 words
32 words
32 words
Package
20P2N-A
20P2E/F-A
20P2N-A
20P2E/F-A
ROM type
Mask ROM
Mask ROM
One Time PROM
One Time PROM
PIN CONFIGURATION (TOP VIEW)
M34280M1-XXXFP/GP
VSS
1
20
E2
2
19
E1
3
18
XIN
4
17
XOUT
5
16
E0
6
15
G0
7
14
G1
8
13
G2
9
12
G3
10
11
Outline 20P2N-A
20P2E/F-A
VDD
CARR
D0
D1
D2
D3
D4
D5
D6
D7