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參數(shù)資料
| 型號： | MSM66509 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 16-Bit Microcontroller(16位微控制器) |
| 中文描述： | 16位微控制器（16位微控制器） |
| 文件頁數(shù)： | 6/24頁 |
| 文件大小： | 284K |
| 代理商： | MSM66509 |
6/24
Semiconductor
MSM66509/66P509
OE
When P0, P1, P7.4-P7.7, and P8-P11 are in an output state and
OE
pin is "H"
level, the ports go to a high-impedance state.
When P0, P1, P7.4-P7.7, and P8-P11 are in an output state and
OE
pin is "L"
level, the ports output "H" or "L" level.
However, when P0, P1, P7.4-P7.7, and P8-P11 are in an input state, these ports
are not under the influence of
OE
pin.
I
NMI
Nonmaskable interrupt request input pin
I
RES
Low-active RESET input pin
I
EA
Normally set to "H" level. If set to "L" level, the program memory goes into
external access mode and accesses external program memory
I
V
DD
Power supply pin
I
GND
Ground pin
I
Symbol
Type
Description
AI0-AI15
Analog signal input pin for A/D converter
I
AV
DD
Power supply input pin for A/D converter
I
V
REF
Reference voltage input pin for A/D converter
I
AGND
GND input pin for A/D converter
I
OSC1
Basic clock oscillation pin
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
PSEN
Strobe pulse output pin to fetch to external program memory
O
OSC0
Basic clock oscillation pin
I
PIN DESCRIPTION (Continued)
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