參數(shù)資料
型號: UPD75048GC
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機
文件頁數(shù): 12/68頁
文件大小: 538K
代理商: UPD75048GC
12
μ
PD75048
(cont'd)
Input/
Output
Circuit
TYPE*
1
Also Served
As
Input
Input
Input
Pins only for A/D
converter
Input
Y-A
Y
Z-A
Z-A
8-bit analog input
Reference voltage input
(AV
DD
side)
Reference voltage input
(AV
SS
side)
Positive power supply
GND
A crystal/ceramic resonator for the main
system clock is connected across these pins.
When using the external clock, the X1 pin
inputs the external clock, and the X2 pin
inputs the reverse phase of the external clock
signal.
Input
Input
A crystal resonator for the subsystem clock is
connected across these pins. When using the
external clock, the XT1 pin inputs the external
clock, and the XT2 pin inputs the reverse
phase of the external clock signal. The XT1 pin
can be used as a 1-bit input(test) pin.
System reset input
B
Internally Connected. Should be connected directly
to V
DD
.
Positive power supply
GND
*1: Circles indicate Schmitt trigger inputs.
Input
Pin Name Input/Output
Function
When Reset
AN0-AN3
AN4-AN7
AV
REF+
AV
REF-
AV
DD
AV
SS
X1, X2
XT1, XT2
RESET
IC
V
DD
V
SS
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