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参数资料
| 型号： | MSM66509-XXXGS-BK |
| 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, PQFP128 |
| 封装： | 28 X 28 MM, 0.80 MM PITCH, PLASTIC, QFP-128 |
| 文件页数： | 21/24页 |
| 文件大小： | 284K |
| 代理商： | MSM66509-XXXGS-BK |
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
VDD
Power supply pin
I
GND
Ground pin
I
Symbol
Type
Description
AI0-AI15
Analog signal input pin for A/D converter
I
AVDD
Power supply input pin for A/D converter
I
VREF
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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