M38503MXH Datasheet, PDF (57/86 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
P41
BUSY
SCLK
TxD
RRxXDD
✽ 2 VPP
RESET
✽1
VCC
1
VREF
2
AVSS
3
P44/INT3/PWM
4
P43/INT2/SCMP2
5
P42/INT1
6
P41/INT0
7
P40/CNTR1
8
P27/CNTR0/SRDY1
9
P26/SCLK1
10
P25/SCL2/TxD
11
P24/SDA2/RxD
12
P23/SCL1
13
P22/SDA1
14
CNVSS
15
P21/XCIN
16
P20/XCOUT
17
RESET
18
XIN
19
XOUT
20
VSS
21
VCC
VSS
42
P30/AN0
41
P31/AN1
40
P32/AN2
39
P33/AN3
38
P34/AN4
37
P00/SIN2
36
P01/SOUT2
35
P02/SCLK2
34
P03/SRDY2
33
P04
32
P05
31
P06
30
P07
29
P10/(LED0)
28
P11/(LED1)
27
P12/(LED2)
26
P13/(LED3)
25
P14/(LED4)
24
P15/(LED5)
23
P16/(LED6)
22
P17/(LED7)
Mode setup method
Signal
CNVSS
P41
RESET
Value
4.5 to 5.5 V
VCC ✽ 3
VSS → VCC
Notes 1: Connect oscillator circuit
2: Connect to Vcc when Vcc = 4.5 V to 5.5 V.
Connect to VPP (=4.5 V to 5.5 V) when Vcc = 2.7 V to 4.5 V.
3: It is necessary to apply Vcc only when reset is released.
Fig. 56 Connection for serial I/O mode
57