参数资料
型号: DS2251T-64-16
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: Microcontroller
英文描述: 8-BIT, 16 MHz, MICROCONTROLLER, SMA72
封装: SIMM-72
文件页数: 17/22页
文件大小: 599K
代理商: DS2251T-64-16
DS2251T
4 of 22
PIN ASSIGNMENT
PIN
NAME
PIN
NAME
PIN
NAME
PIN
NAME
1
P1.0
19
XTAL2
37
P0.2
55
INTB
2
P1.1
20
GND
38
P0.1
56
BD0
3
P1.2
21
P2.0
39
P0.0
57
BD1
4
P1.3
22
P2.1
40
VCC
58
BD2
5
P1.4
23
P2.2
41
BA0
59
BD3
6
P1.5
24
P2.3
42
BA1
60
BD4
7
P1.6
25
P2.4
43
BA2
61
BD5
8
P1.7
26
P2.5
44
BA3
62
BD6
9
RST
27
P2.6
45
BA4
63
BD7
10
P3.0/RXD
28
P2.7
46
BA5
64
R/ W
11
P3.1/TXD
29
PSEN
47
BA6
65
PF
12
P3.2/ INT0
30
ALE
48
BA7
66
PE3
13
P3.3/ INT1
31
PROG
49
BA8
67
PE4
14
P3.4/T0
32
P0.7
50
BA9
68
INTP
15
P3.5/T1
33
P0.6
51
BA10
69
INTA
16
P3.6/ WR
34
P0.5
52
BA11
70
SQW
17
P3.7/ RD
35
P0.4
53
BA12
71
VRST
18
XTAL1
36
P0.3
54
BA13
72
BA15
PIN DESCRIPTION
PIN
DESCRIPTION
39–32
P0.0–P0.7. General-purpose I/O Port 0. This port is open-drain and cannot drive a logic 1. It
requires external pullups. Port 0 is also the multiplexed Expanded Address/Data bus. When
used in this mode, it does not require pullups.
1–8
P1.0–P1.7. General-purpose I/O Port 1.
21–28
P2.0–P2.7. General-purpose I/O Port 2. Also serves as the MSB of the Expanded Address
bus.
10
P3.0/RXD. General-purpose I/O port pin 3.0. Also serves as the receive signal for the on-
board UART. This pin should NOT be connected directly to a PC COM port.
11
P3.1/TXD. General-purpose I/O port pin 3.1. Also serves as the transmit signal for the on-
board UART. This pin should NOT be connected directly to a PC COM port.
12
P3.2/ INT0 . General-purpose I/O port pin 3.2. Also serves as the active low External
Interrupt 0.
13
P3.3/ INT1 . General-purpose I/O port pin 3.3. Also serves as the active low External
Interrupt 1.
14
P3.4/T0. General-purpose I/O port pin 3.4. Also serves as the Timer 0 input.
相关PDF资料
PDF描述
DS2251T-32-16 8-BIT, 16 MHz, MICROCONTROLLER, SMA72
DS2252T-128-16 8-BIT, 16 MHz, MICROCONTROLLER, SMA40
DS2252T-64-16 8-BIT, MICROCONTROLLER, SMA40
DS2252T-32-16 8-BIT, MICROCONTROLLER, SMA40
DS2252T 8-BIT, MICROCONTROLLER, SMA40
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