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IC500 M37903S4CHP (16-bit C-Mos Micro Computer)
Pin No.
Symbol
87, 91
V
,V
CC
SS
33
MD0
54
MD1
32
RESET
35
X
IN
36
X
OUT
30
BYTE
31
CDSEL
88
AV
,
CC
90
AV
SS
89
V
REF
P0
/A
-
0
16
56-63
P0
/A
7
23
P1
/D
-
0
0
46-53
P1
/D
7
7
P2
/D
-
0
8
38-45
P2
/D
7
15
26-29
P3
- P3
0
TE
L 13942296513
18-25
P4
- P4
0
10-17
P5
- P5
0
5-9
P6
- P6
0
1, 94-100
P7
- P7
0
2-4, 80,
P8
- P8
0
81, 93
P10
/A
0
0
72-79
P10
A
7
7
P11
/A
0
8
64-71
P11
/A
7
15
92
NMI
Note : The X
-input-clock division select bit is used to determine whether the input clock to pin X
IN
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Input/
N a m e
Output
Power supply input
—
MD0
Input
MD1
Input
Reset input
Input
Clock input
Input
Clock output
Output
External data bus width
Input
select input
Clock division select
Input
input
Analog power supply
—
input
Reference voltage input
Input
Address (high-order)
Output
output
Data (low-order) I/O
I/O
I/O port p2,
I/O
Data (high-order) I/O
I/O port P3
I/O
3
I/O port P4
I/O
7
I/O port P5
I/O
7
I/O port P6
I/O
7
I/O port P7
I/O
7
I/O port P8
I/O
7
-
Address (low-order)
Output Address (A
output
-
Address (middle-order)
Output
output
Non-mask able interrupt
Input
x
ao
y
i
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8
DVD P.C.B.
Apply 5V ±0.5V to Vcc, and 0V to Vss.
Connect this pin to Vcc.
Connect this pin to Vss.
The microcomputer is reset when Vss-level voltage is applied to this pin.
Input and output pins of the internal clock generating circuit.
This pin determines whether the external data bus has an 8-bit width or 16-bit width for the
memory expansion mode or microprocessor mode. The width is 16 bits when V
voltage is input, and 8 bits when V
CC
resister setting, the external data bus for each of areas CS
This pin determines the X
-input-clock division select bit's (note) state at reset and the input
IN
level at pin X
.
IN
Power supply input pins for the A-D converter and the D-A converter. Connect AV
and AV
to V
externally.
SS
SS
This is the reference voltage input pin for the A-D converter and the D-A converter.
Address (A
-A
) is output. These pins also function as I/O port pins according to the register
16
23
setting.
The low-order 8 bits of data (D
-D
) are input /output. When the external data bus has an 8-bit
0
7
width, address (LA
-LA
) output and data (D
0
7
time-sharing method, according to the register setting.
When 8-bit external data bus is used.
Port P2 is an 8-bit I/O port. This port has an I/O direction register, and each pin can be
programmed for input or output. These pins enter the input mode at reset.
When 16-bit external data bus is used.
The high-order 8 bits of data (D
- D
8
P30 functions as an input pin of RDY; and P31, P32. P33 function as the output pins of RD,
BLW, BHW, respectively. P30 also functions as an I/O port pin according to the register
Q Q
3
6 7
1 3
setting. When the external data has a width of 8 bits, be BHW pin functions
P4
- P4
function as output or input pins of ALE,
0
4
I/O port pins, respectively. According to the register setting, P4
pins, and P4
- P4
as output pins of CS
5
7
Port P5 is an 8-bit I/O port. This port has an I/O direction register, and each pin can be
programmed for input or output. These pins enter the input mode at reset. These pins also
function as I/O pins for timers A0 - A3, output pins for the real-time output pins for the real-time
output, and input pins for the key-input interrupt.
Port P6 is an 8-bit I/O port. This port has an I/O direction register, and each pin can be
programmed for input or output. These pins enter the input mode at reset. These pins also
function as I/O pins for timers A4, input pins for external interrupt inputs INT
pins for timers B0 - B2.
Port P7 is an 8-bit I/O port. This port has an I/O direction register, and each pin can be
programmed for input or output. These pins enter the input mode at reset. These pins also
function as input pins for the A-D converter, output pins for the D-A converter, and input pins
for INT
, INT
, and INT
.
2
3
4
Port P8 is an 8-bit I/O port. This port has an I/O direction register, and each pin can be
programmed for input or output. These pins enter the input mode at reset.
These pins also function as I/O pins for UART0, UART1, and input pins for INT
-A
) is output.
0
7
Address (A
-A
) is output. These pins also function as I/O port pins according to the register
8
15
setting.
This pin is for a non-mask able interrupt.
u163
.
DVR-S60/NX-SW60
2 9
9 4
2 8
Description
-level voltage is applied. When BYTE=V
to CS
can have a width of 8 bits.
1
3
-D
) input/output can be performed with the
0
7
) are input or output.
15
1 5
0 5
8
2 9
9 4
φ
1, HLDA, HOLD, CS
0
- P4
also function as I/O port
0
3
- CS
.
1
3
is to be divided or not.
IN
m
co
9 9
-level
SS
level, by the
SS
to V
,
CC
CC
2 8
9 9
, and P4
- P4
as
5
7
- INT
, and input
0
2
and INT
.
3
4
63
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