參數(shù)資料
型號(hào): UPD75116H
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機(jī)
文件頁(yè)數(shù): 25/66頁(yè)
文件大?。?/td> 472K
代理商: UPD75116H
25
μ
PD75116H,75117H
5.7
PROGRAMMABLE THRESHOLD PORT (ANALOG INPUT PORT)
The
μ
PD75117H is provided with 4-bit analog input pins (PTH00 to PTH03) for which the threshold voltage can
be changed. These pins have a configuration as shown in Fig. 5-6.
The threshold voltage (V
REF
) can be selected in 16 ways (V
DD
×
——— – V
DD
×
———) and analog signals can be
directly input.
This port can also be used as a digital signal input port by selecting V
DD
×
——— as V
REF
.
Fig. 5-6 Programmable Threshold Port Block Diagram
16
16
7.5
16
#
PTHM7
PTHM6
PTHM5
PTHM4
PTHM3
PTHM2
PTHM1
PTHM0
PTHM
4
MPX
V
REF
V
DD
PTH00
PTH01
PTH02
PTH03
+
+
+
+
Operation
Stopped
PTH0
Input Buffer
P
P
I
8
2
2
R
R
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