JVC RC-BM5 Service Manual page 25

MX10FLCDPC (IC301) : MCU
1.Terminal layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
3.Pin function
Pin No.
P1.0 to P1.7
P2.0 to P2.5,P3.4 to P3.5
P0.0 to P0.7
P3.3
P2.7
ALE
EA
P3.7,P3.1,P3.0
VDD
GND
2. Block diagram
40
39
38
Vcc
37
36
35
Vss
34
33
32
31
30
29
28
27
26
25
24
23
22
21
B
REGISTER TMP2
PSEN
TIMING
ALE
AND
EA
CONTROL
RST
osc
XTAL1
Symbol I/O
A0 to A7
A8 to A13,A14 to A15
Q0 to Q7 I/O
CE
OE I/O
WE
Vpp
MS2 to MS0
VDD
GND
P0.0-P0.7 P2.0-P2.7
PORT 0 PORT2
DRIVERS DRIVERS
PORT 0 PORT 2
RAM
LATCH LATCH
STACK
ACC
WATCHDOG
POINTER
TMP1
ALU
T0/T1/T2
SFRs
TIMERS
PSW
PORT1
LATCH
PORT1
DRIVERS
XTAL2
P1.0-P1.7
Function
I Input low order address bits
I Input high order address bits
Data input/output
I Chip enable input
Output enable input
I Write enable input
- Program supply voltage, 12.5-13volts
- Flash mode selection
- Power supply voltage (+5V)
- Ground pin
ROM
PROGRAM
ADDR.
REGISTER
T3
BUFFER
TIMER
PC
INCREMENTER
PROGRAM
COUNTER
DPTR
PORT1
LATCH
PORT1
DRIVERS
P3.0-P3.7
RC-BM5
1-25