參數(shù)資料
型號(hào): UPD75P56CS-012
廠商: NEC Corp.
英文描述: 4-Bit, Single-Chip, One-Time Programmable (OTP) CMOS Microcomputer With Comparator
中文描述: 4位,單芯片,一次性可編程(OTP)的CMOS微機(jī)與比較
文件頁(yè)數(shù): 9/40頁(yè)
文件大小: 320K
代理商: UPD75P56CS-012
9
μ
PD75P048
1.2 NON-PORT PINS (2/2)
Pin Name
X1, X2
XT1, XT2
RESET
MD0 - MD3
V
PP
Note 2
V
DD
V
SS
Shared
Pin
P30 - P33
When Reset
Input
Input/
Output
Input
Input
Input
I/O
Function
Crystal/ceramic resonator connection for main
system clock generation. When external clock
signal is used, it is applied to X1, and its
reverse phase signal is applied to X2.
Crystal connection for subsystem clock
generation. When external clock signal is
used, it is applied to XT1, and its reverse
phase signal is applied to XT2. XT1 can be
used as a 1-bit input (test).
System reset input
Operation mode selection pins during the
PROM write/verify cycles.
Normally connected to V
DD
directly; +12.5 V is
applied as the programming voltage during the
PROM write/verify cycles.
Positive power supply
GND potential
I/O Circuit
Type
Note 1
E-B
B
Note 1.
The circle (
2.
The V
PP
should be connected to V
DD
directly in normal operation mode. If V
PP
and V
DD
pins are not
connected, the
μ
PD75P048 does not operate correctly.
) indicates the Schmitt trigger input.
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