M34501M2 Datasheet, PDF (1/113 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
4501 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 4501 Group is a 4-bit single-chip microcomputer designed with
CMOS technology. Its CPU is that of the 4500 series using a
simple, high-speed instruction set. The computer is equipped with
two 8-bit timers (each timer has a reload register), interrupts, and
10-bit A-D converter.
The various microcomputers in the 4501 Group include variations
of the built-in memory size as shown in the table below.
FEATURES
qMinimum instruction execution time ................................ 0.68 µs
(at 4.4 MHz oscillation frequency, in high-speed mode)
qSupply voltage ......................................................... VRST to 5.5 V
(VRST: detection voltage of voltage drop detection circuit)
q Timers
Timer 1 ...................................... 8-bit timer with a reload register
Timer 2 ...................................... 8-bit timer with a reload register
qInterrupt ........................................................................ 4 sources
qKey-on wakeup function pins ................................................... 12
qInput/Output port ...................................................................... 14
qA-D converter .................. 10-bit successive comparison method
qWatchdog timer
qClock generating circuit (ceramic resonator/RC oscillation)
qLED drive directly enabled (port D)
qPower-on reset circuit
qVoltage drop detection circuit ........................... VRST: Typ. 3.5 V
(Ta = 25 °C)
APPLICATION
Electrical household appliance, consumer electronic products, of-
fice automation equipment, etc.
Product
M34501M2-XXXFP
M34501M4-XXXFP
M34501E4FP (Note)
Note: Shipped in blank.
PIN CONFIGURATION
ROM (PROM) size
(✕ 10 bits)
2048 words
4096 words
4096 words
RAM size
(✕ 4 bits)
128 words
256 words
256 words
Package
20P2N-A
20P2N-A
20P2N-A
ROM type
Mask ROM
Mask ROM
One Time PROM
VDD
VSS
XIN
XOUT
CNVSS
RESET
P21/AIN1
P20/AIN0
D3/K
D2/C
Pin configuration (top view) (4501 Group)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
Outline 20P2N-A
P00
P01
P02
P03
P10
P11
P12/CNTR
P13/INT
D0
D1