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參數(shù)資料
| 型號： | P83C524 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit microcontrollers |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 11/76頁 |
| 文件大小： | 400K |
| 代理商： | P83C524 |
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1997 Dec 15
11
Philips Semiconductors
Product specification
8-bit microcontrollers
P83C524; P80C528; P83C528
7.2
Pin description
Table 1
Pin description for P83C524, P80C528 and P83C528; see note 1
SYMBOL
PIN
DESCRIPTION
SOT 129-1 SOT 187-2 SOT 307-2
P1.0
P1.7 1 to 8
2
9
(1 n.c.)
1
3,
40
44
(39 n.c.)
Port 1
: 8-bit quasi-bidirectional I/O Port. Port 1 can sink/source
one TTL (= 4 LSTTL) input. It can drive CMOS inputs without
external pull-ups, except P1.6 and P1.7 which have open drain
outputs.
Port 1 alternative functions:
P1.0
Timer/event counter 2 external event counter input
(falling edge triggered)
P1.1
Timer/event counter 2 capture/reload trigger or external
interrupt 2 input (falling edge triggered)
P1.6
I
2
C-bus Serial Port clock line
P1.7
I
2
C-bus Serial Port data line.
RESET
: a HIGH level on this pin for two machine cycles while the
oscillator is running, resets the device. An internal pull-down
resistor permits power-on reset using only a capacitor connected
to V
DD
. After a WDT overflow this pin is pulled HIGH while the
internal reset signal is active.
Port 3
: 8-bit quasi-bidirectional I/O Port with internal pull-ups.
T2
1
2
40
T2EX
2
3
41
SCL
SDA
RST
7
8
9
8
9
10
2
3
4
P3.0
P3.7 10
17
11, 13
19
(12 n.c.)
5, 7
13
(6 n.c.)
Port 3 can sink/source one TTL (= 4 LSTTL) input. It can drive
CMOS inputs without external pull-ups.
Port 3 alternative functions:
P3.0
Serial Port data input (asynchronous) or data
input/output (synchronous)
P3.1
Serial Port data output (asynchronous) or clock output
(synchronous)
P3.2
external interrupt 0 or gate control input for timer/event
counter 0
P3.3
external interrupt 1 or gate control input for timer/event
counter 1
P3.4
external input for timer/event counter 0
P3.5
external input for timer/event counter 1
P3.6
external data memory write strobe
P3.7
external data memory read strobe.
The generation or use of a Port 3 pin as an alternative function is
carried out automatically by the P83C528 provided the associated
Special Function Register (SFR) bit is set HIGH.
Crystal input 2
: output of the inverting amplifier that forms the
oscillator. This pin left open-circuit when an external oscillator
clock is used (see Figures 22 and 23).
RXD/data
10
11
5
TXD/clock
11
13
7
INT0
12
14
8
INT1
13
15
9
T0
T1
WR
RD
14
15
16
17
16
17
18
19
10
11
12
13
XTAL2
18
20
14
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