參數(shù)資料
型號: μPD75P3116
廠商: NEC Corp.
英文描述: 4 Bit Single Chip Microcontrollers(4位單片微控制器)
中文描述: 4位單片微控制器(4位單片微控制器)
文件頁數(shù): 9/60頁
文件大?。?/td> 350K
代理商: ΜPD75P3116
μ
PD75P3116
9
3.2 Non-port Pins (2/2)
Pin name
I/O
Alternate function
Function
Status
after reset
I/O circuit
type
S0 to S15
Output
Segment signal output
Note 1
G-A
S16 to S19
Output
P93 to P90
Segment signal output
Input
H
S20 to S23
Output
P83 to P80
Segment signal output
Input
H
COM0 to COM3
Output
Common signal output
Note 1
G-B
V
LC0
to
V
LC2
Power supply for driving LCD
BIAS
Output
Output for external split resistor cut
Note 2
LCDCL
Note 3
I/O
P30/MD0
Clock output for driving external expansion driver
Input
E-B
SYNC
Note 3
I/O
P31/MD1
Clock output for synchronization of external expansion driver
Input
E-B
Notes 1.
The V
PP
pin does not operate normally if it is not connected with V
DD
pin when normal operation.
2.
The V
LCX
(X = 0, 1, 2) shown below are selected as the input source for the display outputs.
S0 to S23: V
LC1
, COM0 to COM2: V
LC2
, COM3: V
LC0
3.
When the split resistor is incorporated
When the split resistor is not incorporated : High impedance
4.
These pins are provided for future system expansion. Currently, only P30 and P31 are used.
: Low level
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