MITSUBISHI MICROCOMPUTERS
4250 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 4250 Group is a 4-bit single-chip microcomputer designed
with CMOS technology. Its CPU is that of the 720 series using a
simple instruction set. The computer is equipped with one 8-bit
timer which has a reload register and the interrupt function.
The various microcomputers in the 4250 Group include variations
of the built-in memory type as shown in the table below.
• Timer
Timer 1 ................................ 8-bit timer with a reload register
• Interrupt ................................................................... 2 sources
• CR oscillation circuit (Capacitor and Resistor connected
externally)
• Logic operation instruction
• RAM back-up function
• Key-on wakeup function (ports G and S, INT pin)
FEATURES
• Minimum instruction execution time ............................. 1.0
µ
s
(at 4.0 MHz system clock frequency, V
DD
=4.5 V to 5.5 V)
• Supply voltage
4.5 V to 5.5 V (at 4.0 MHz system clock frequency)
2.5 V to 5.5 V (at 1.0 MHz system clock frequency)
2.2 V to 5.5 V (at 1.0 MHz system clock frequency:
only for Mask ROM version)
ROM (PROM) size
(✕ 9 bits)
2048 words
2048 words
APPLICATION
Electric household appliances, consumer electronics products
(mouse, etc.)
Product
M34250M2-XXXFP
M34250E2-XXXFP *
RAM size
(✕ 4 bits)
64 words
64 words
Package
20P2N-A
20P2N-A
ROM type
Mask ROM
One Time PROM
*: Shipped after writing (shipped in blank: M34250E2FP)
PIN CONFIGURATION (TOP VIEW)
M34250M2-XXXFP
V
D D
V
SS
X
IN
X
OUT
CNV
SS
RESET
F
0
F
1
G
0
/INT
G
1
/T
OUT
1
2
20
19
D
0
D
1
D
2
/C
D
3
/K
S
0
S
1
S
2
S
3
G
3
G
2
M34250M2-XXXFP
3
4
5
6
7
8
9
10
18
17
16
15
14
13
12
11
Outline 20P2N-A
RENESAS [ RENESAS TECHNOLOGY CORP ]
