參數(shù)資料
型號(hào): M38234G2-XXXFP
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機(jī)
文件頁數(shù): 5/76頁
文件大?。?/td> 896K
代理商: M38234G2-XXXFP
Rev.2.02 Jun 19, 2007 page 5 of 73
REJ03B0146-0202
3823 Group
PIN DESCRIPTION
Table 2 Pin description (1)
V
CC
, V
SS
Function
Pin
Name
Function except a port function
LCD segment output pins
Power source
Apply voltage of power source to V
CC
, and 0 V to V
SS
. (For the limits of V
CC
, refer to “Recom-
mended operating conditions”).
Reference voltage input pin for A/D converter.
V
REF
AV
SS
RESET
X
IN
X
OUT
V
L1
–V
L3
COM
0
–COM
3
SEG
0
–SEG
11
P0
0
/SEG
16
P0
7
/SEG
23
P1
0
/SEG
24
P1
7
/SEG
31
P2
0
/KW
0
P2
7
/KW
7
P3
4
/SEG
12
P3
7
/SEG
15
Analog refer-
ence voltage
Analog power
source
Reset input
Clock input
Clock output
LCD power
source
Common output
Segment output
I/O port P0
I/O port P1
I/O port P2
GND input pin for A/D converter.
Connect to V
SS
.
Reset input pin for active “L”.
Input and output pins for the main clock generating circuit.
Feedback resistor is built in between X
IN
pin and X
OUT
pin.
Connect a ceramic resonator or a quartz-crystal oscillator between the X
IN
and X
OUT
pins to set
the oscillation frequency.
If an external clock is used, connect the clock source to the X
IN
pin and leave the X
OUT
pin open.
This clock is used as the oscillating source of system clock.
Input 0
V
L1
V
L2
V
L3
voltage.
Input 0 – V
L3
voltage to LCD.
LCD common output pins.
COM
2
and COM
3
are not used at 1/2 duty ratio.
COM
3
is not used at 1/3 duty ratio.
LCD segment output pins.
8-bit I/O port.
CMOS compatible input level.
CMOS 3-state output structure.
I/O direction register allows each port to be individually
programmed as either input or output.
Pull-down control is enabled.
8-bit I/O port.
CMOS compatible input level.
CMOS 3-state output structure.
I/O direction register allows each pin to be individually
programmed as either input or output.
Pull-up control is enabled.
4-bit input port.
CMOS compatible input level.
Pull-down control is enabled.
Key input (key-on wake-up) interrupt
input pins
LCD segment output pins
Input port P3
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M38234G2-XXXHP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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