MITSUBISHI MICROCOMPUTERS
4570 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 4570 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 a carrier wave output circuit for remote control, an 8-bit timer
with a reload register, a 10-bit timer with a reload register, and
an 8-bit timer with two reload registers.
The various microcomputers in the 4570 Group include variations
of the built-in memory size. The mask ROM version and One
Time PROM version of 4570 Group are produced as shown in
the table below.
q
System clock switch function
............................................................. f(X
IN
)/4 or not divided
q
Timers
Timer 1... 10-bit timer with a reload register and carrier wave
output auto-control function
Timer 2 ................................ 8-bit timer with a reload register
Timer 3... 8-bit timer with two reload registers and carrier wave
generation function
q
Interrupt ................................................................... 4 sources
q
Power-on reset circuit
q
Watchdog timer ............................................................ 16 bits
q
Key-on wakeup function (Ports P0, P1, and P4, ON/OFF of
port P4 can be switched)
qPull-up
transistor .............. (Ports P0, P1, and P4, ON/OFF of
port P4 can be switched)
q
Voltage drop detection circuit
q
Clock generating circuit (ceramic resonance)
FEATURES
q
Minimum instruction execution time
When f(X
IN
) is selected for system clock ....................... 1.5
碌
s
(f(X
IN
)=2.0 MHz, V
DD
=4.5 V to 5.5 V)
When f(X
IN
)/4 is selected for system clock ................. 2.86
碌
s
(f(X
IN
)=4.2 MHz, V
DD
=2.0 V to 5.5 V)
q
Supply voltage
............................. 2.5 V to 5.5 V (One Time PROM version)
....................................... 2.0 V to 5.5 V (Mask ROM version)
Product
M34570M4-XXXFP
M34570M8-XXXFP
M34570MD-XXXFP
M34570E8FP
M34570EDFP *
*: Under development (Jan. 1999)
ROM (PROM) size
(! 10 bits)
4096 words
8192 words
16384 words
8192 words
16384 words
APPLICATION
Remote control transmitter
RAM size
(! 4 bits)
128 words
128 words
128 words
128 words
128 words
Package
36P2R-A
36P2R-A
36P2R-A
36P2R-A
36P2R-A
ROM type
Mask ROM
Mask ROM
Mask ROM
One Time PROM
One Time PROM
PIN CONFIGURATION (TOP VIEW)
M34570Mx-XXXFP
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
/T
OUT
P2
0
P2
1
/INT
RESET
CNV
SS
X
OUT
X
IN
V
SS
VDCE
V
DD
CARR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Outline 36P2R-A
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
D
1
D
0
P1
3
P1
2
P1
1
P1
0
P0
3
P0
2
P0
1
P0
0
P4
3
P4
2
P4
1
P4
0
P3
3
P3
2
P3
1
P3
0
M34570Mx-XXXFP