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參數(shù)資料
| 型號： | SC87C451CGA68 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, expanded I/O |
| 中文描述： | 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQCC68 |
| 封裝： | PEDESTAL, PLASTIC, MO-047AE, SOT-188-3, LCC-68 |
| 文件頁數(shù)： | 2/22頁 |
| 文件大?。?/td> | 162K |
| 代理商： | SC87C451CGA68 |
Philips Semiconductors
Product specification
80C451/83C451/87C451
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, expanded I/O
2
1998 May 01
853-0830 19327
DESCRIPTION
The Philips 8XC451 is an I/O expanded single-chip microcontroller
fabricated with Philips high-density CMOS technology. Philips
epitaxial substrate minimizes latch-up sensitivity.
The 8XC451 (includes the 80C451, 87C451 and 83C451) is a
functional extension of the 87C51 microcontroller with three
additional I/O ports and four I/O control lines for a total of 68 pins.
Four control lines associated with port 6 facilitate high-speed
asynchronous I/O functions.
The 8XC451 includes a 4k
×
8 ROM (83C451) EPROM (87C451), a
128
×
8 RAM, 56 I/O, two 16-bit timer/counters, a five source, two
priority level, nested interrupt structure, a serial I/O port for either a
full duplex UART, I/O expansion, or multi-processor
communications, and on-chip oscillator and clock circuits. The
80C451 ROMless version includes all of the 83C451 features except
the on-board 4k
×
8 ROM.
The 87C451 has 4k of EPROM on-chip as program memory and is
otherwise identical to the 83C451.
The 8XC451 has two software selectable modes of reduced activity
for further power reduction; idle mode and power-down mode. Idle
mode freezes the CPU while allowing the RAM, timers, serial port,
and interrupt system to continue functioning. Power-down mode
freezes the oscillator, causing all other chip functions to be
inoperative while maintaining the RAM contents.
FEATURES
80C51 based architecture
Seven 8-bit I/O ports
Port 6 features:
– Eight data pins
– Four control pins
– Direct MPU bus interface
– Parallel printer interface
On the microcontroller:
– 4k
×
8 ROM (83C451)
4k
×
8 EPROM (87C451)
ROMless version (80C451)
– 128
×
8 RAM
– Two 16-bit counter/timers
– Two external interrupts
External memory addressing capability
– 64k ROM and 64k RAM
Low power consumption:
– Normal operation: less than 24mA at 5V, 12MHz
– Idle mode
– Power-down mode
PIN CONFIGURATION
LCC
9
1
61
10
26
60
44
27
43
Pin
Function
EA/V
PP
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.5/A13
P2.6/A14
P2.7/A15
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
V
CC
P4.7
P4.6
P4.5
P4.4
P4.3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Pin
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
Function
P4.2
P4.1
P4.0
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
P3.0/RxD
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P3.6/WR
P3.7/RD
P5.0
P5.1
P5.2
Pin
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
Function
P5.3
P5.4
P5.5
P5.6
P5.7
XTAL2
XTAL1
V
SS
ODS
IDS
BFLAG
AFLAG
P6.0
P6.1
P6.2
P6.3
P6.4
P6.5
P6.6
P6.7
PSEN
ALE/PROG
SU00084A
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