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| 型号： | P87C552 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | 80C51 8-bit microcontroller(80C51八位微控制器) |
| 中文描述： | 80C51的8位微控制器（80C51的八位微控制器） |
| 文件页数： | 6/74页 |
| 文件大小： | 368K |
| 代理商： | P87C552 |
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Philips Semiconductors
Preliminary specification
P87C552
80C51 8-bit microcontroller
8K/256 OTP, 8 channel 10 bit A/D, I
2
C, PWM,
capture/compare, high I/O, low voltage (2.7V–5.5V), low power
1999 Mar 30
6
PIN DESCRIPTION
(Continued)
PIN NO.
MNEMONIC
PLCC
QFP
TYPE
NAME AND FUNCTION
P4.0-P4.7
7-14
80, 1-2
4-8
80, 1-2
4-6
7, 8
I/O
Port 4:
8-bit programmable I/O port. Alternate functions include:
7-12
O
CMSR0-CMSR5 (P4.0-P4.5):
Timer T2 compare and set/reset outputs on a match with
timer T2.
CMT0, CMT1 (P4.6, P4.7):
Timer T2 compare and toggle outputs on a match with timer T2.
13, 14
O
Port 4 has four modes selected on a per bit basis by writing to the P4M1 and P4M2
registers as follows:
P4M1.x
P4M2.x
Mode Description
0
0
Pseudo-bidirectional (standard c51 configuration; default)
0
1
Push-Pull
1
0
High impedance
1
1
Open drain
P5.0-P5.7
68-62,
1
71-64
I
Port 5:
8-bit input port.
ADC0-ADC7 (P5.0-P5.7):
Alternate function: Eight input channels to the ADC.
RST
15
9
I/O
Reset:
Input to reset the 87C552. It also provides a reset pulse as output when timer T3
overflows.
XTAL1
35
32
I
Crystal Input 1:
Input to the inverting amplifier that forms the oscillator, and input to the
internal clock generator. Receives the external clock signal when an external oscillator is
used.
XTAL2
34
31
O
Crystal Input 2:
Output of the inverting amplifier that forms the oscillator. Left open-circuit
when an external clock is used.
V
SS
PSEN
36, 37
34-36
I
Digital ground.
47
48
O
Program Store Enable:
Active-low read strobe to external program memory.
ALE/PROG
48
49
O
Address Latch Enable:
Latches the low byte of the address during accesses to external
memory. It is activated every six oscillator periods. During an external data memory
access, one ALE pulse is skipped. ALE can drive up to eight LS TTL inputs and handles
CMOS inputs without an external pull-up. This pin is also the program pulse input (PROG)
during EPROM programming.
EA/V
PP
49
50
I
External Access:
When EA is held at TTL level high, the CPU executes out of the internal
program ROM provided the program counter is less than 8,192. When EA is held at TTL
low level, the CPU executes out of external program memory. EA is not allowed to float.
This pin also receives the 12.75V programming supply voltage (V
PP
) during EPROM
programming.
AV
REF–
AV
REF+
AV
SS
AV
DD
NOTE:
1. To avoid “latch-up” effect at power-on, the voltage on any pin at any time must not be higher or lower than V
DD
+ 0.5V or V
SS
– 0.5V,
respectively.
58
59
I
Analog to Digital Conversion Reference Resistor:
Low-end.
59
60
I
Analog to Digital Conversion Reference Resistor:
High-end.
60
61
I
Analog Ground
61
63
I
Analog Power Supply
相关PDF资料 |
PDF描述 |
|---|---|
| P87C554SBBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P83C554SBBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P80C554SBBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P87C554SFBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P83C554SFBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| P87C552OTP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:80C51 8-bit microcontroller |
| P87C552SBAA | 制造商:NXP Semiconductors 功能描述:87C 16MHz 制造商:NXP Semiconductors 功能描述:87C 16MHz Bulk 制造商:NXP Semiconductors 功能描述:IC 8-BIT MCU 8K OTP PLCC68 制造商:NXP Semiconductors 功能描述:MCU 8-Bit 87C 80C51 CISC 8KB EPROM 3.3V/5V 68-Pin PLCC |
| P87C552SBAA,512 | 功能描述:8位微控制器 -MCU 80C51 8K/256 OTP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| P87C552SBAA512 | 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 16MHZ LCC-68 |
| P87C552SFAA | 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU SMD 87C552 PLCC68 |
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