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參數(shù)資料
| 型號： | SAE81C91 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁數(shù)： | 37/41頁 |
| 文件大?。?/td> | 521K |
| 代理商： | SAE81C91 |
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07Feb95@09:05h Intermediate Version
Semiconductor Group
4
SAE 81C90/91
Pin Definitions and Functions
Symbol
Pin Number
Input (I)
Output (O)
Function
PLCC-48 PLCC-28
X1 1)
11
28
O
Crystal oscillator output.
Must be unconnected for external clock input.
X2 1)
10
27
I
Crystal oscillator input.
Used for external clock input.
CLKOUT 1)
14
3
O
Clock output
RES
19
4
I
Reset. (Schmitt trigger characteristic)
AD0/DI
42
19
I/O
PI: Address / Data bus / SI: Data input
AD1/DO
43
20
I/O
PI: Address / Data bus / SI: Data output
AD2/CLK
44
21
I/O
PI: Address / Data bus / SI: Clock input
AD3/W
1
22
I/O
PI: Address / Data bus / SI: Write select
AD4/TIM
2
23
I/O
PI: Address / Data bus / SI:
TIM = 0: Timing A; TIM = 1: Timing B
AD5
3
24
I/O
PI: Address/Data bus
AD6
4
25
I/O
PI: Address/Data bus
AD7
5
26
I/O
PI: Address/Data bus
RD
35
16
I
PI: Read / SI: no Function
WR
36
17
I
PI: Write / SI: no Function
ALE
34
15
I
PI: Address Latch Enable / SI:no Function
CS
27
12
I
Chip Select
INT
41
18
O
Interrupt
MS
26
11
I
Mode Select (PI
SI)
P00 … P03,
P04 … P07
28, 29,
30, 31,
37, 38,
39, 40
–
I/O
Port 0
These pins provide internal pullup resistors of
about 10...200 k
.
P10 … P13,
P14 … P17
18, 17,
16, 15,
9, 8, 7, 6
–
I/O
Port 1
These pins provide internal pullup resistors of
about 10...200 k
.
TX0
25
10
O
Transmitter output 0
TX1
24
9
O
Transmitter output 1
RX0
23
8
I
Comparator input 0 / Digital input 2)
RX1
22
7
I
Comparator input 1 2)
V
DDA
20
5
I
Analog power supply for comparator
(may be unconnected using the digital mode)
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