參數(shù)資料
型號(hào): 39504
廠商: Microchip Technology Inc.
英文描述: Section 4. Architecture
中文描述: 第4節(jié)。建筑
文件頁數(shù): 13/16頁
文件大?。?/td> 232K
代理商: 39504
2000 Microchip Technology Inc.
DS39504A-page 4-13
Section 4 Architecture
A
4
V
REF
I
Analog
Analog High Voltage Reference input.
DR reference voltage output on devices with comparators.
Analog High Voltage Reference input.
Usually multiplexed onto an analog pin.
Analog Low Voltage Reference input.
Usually multiplexed onto an analog pin.
Ground reference for logic and I/O pins.
Positive supply for logic and I/O pins.
Programming voltage input
Write control for parallel slave port (See CS and RD pins also).
System bus write low byte strobe
System bus write high byte strobe
CMOS = CMOS compatible input or output
O = output
I = input
P = Power
V
REF
+
I
Analog
V
REF
-
I
Analog
V
SS
V
DD
V
PP
WR
WRL
WRH
Legend: TTL = TTL-compatible input
ST = Schmitt Trigger input with CMOS levels
PU = Weak internal pull-up
Analog = Analog input or output
P
P
P
I
O
O
TTL
Table 4-1:
I/O Descriptions (Continued)
Pin Name
Pin
Type
Buffer
Type
Description
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