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参数资料
| 型号： | MSM66507-XXXJS-B |
| 厂商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 32 MHz, MICROCONTROLLER, PQCC84 |
| 封装： | 0.115 INCH, 1.27 MM PITCH, PLASTIC, LCC-84 |
| 文件页数： | 21/24页 |
| 文件大小： | 276K |
| 代理商： | MSM66507-XXXJS-B |
6/24
Semiconductor
MSM66507/66P507
PIN DESCRIPTION (Continued)
OE
Normally, when P0, P1, and P7.4-P7.7 are in an output state and the OE pin is
"H" level, the ports go to a high impedance state. When OE pin is "L" level,
the ports output "H" or "L" level. However, when P0, P1, and P7.4-P7.7 are in
an input state, these ports are not under the influence of OE pin.
I
NMI
Nonmaskable interrupt request input pin
I
RES
RESET input pin
Low-active reset input pin
I
EA
Normally set to "H" level. If set to "L" level, the program memory goes to external
access mode and accesses external program memory.
I
VDD
Power supply pin
I
GND
Ground pin
I
Symbol
Type
Description
PSEN
Strobe pulse output pin to fetch to external program memory
O
ALE
Timing pulse output pin to latch the lower 8 bits of the address output from port
0 when the CPU accesses the external memory
O
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