參數(shù)資料
型號(hào): UPD6124A
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION
中文描述: 4位單片機(jī)的遙控傳輸
文件頁(yè)數(shù): 10/36頁(yè)
文件大小: 172K
代理商: UPD6124A
μ
PD6124A, 6600A
10
11.3
K
I
PIN (P
12
)
This is the 4-bit pin for key input. All of these pins can be pulled down to the V
SS
level by mask option.
Figure 11-2. K
I
Pin Organization
P
12
K
I3
K
I2
K
I1
K
I0
P
2
Mask option
11.4
K
I
PULL-DOWN RESISTOR CONFIGURATION
V
DD
V
SS
N-ch
V
SS
Pin
Input signal
K pull-down
resistor switch
(Mask option)
Pull-down
resistor
P-ch
When the pull-down resistor switch is turned on (set 1) by the mask option, pull-down resistor R is turned on.
Caution
When using the pin as the key switch, turn on the pull-down resistor switch by the mask option.
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