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參數(shù)資料
| 型號(hào)： | 87C554 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 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 |
| 中文描述： | 80C51的8位微控制器。 6小時(shí)運(yùn)作16K/512檢察官辦公室/光盤(pán)/無(wú)ROM，7通道10位A / D，I2C和脈寬調(diào)制，捕捉/比較，高I / O，64L LQFP封裝 |
| 文件頁(yè)數(shù)： | 6/76頁(yè) |
| 文件大小： | 400K |
| 代理商： | 87C554 |
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Philips Semiconductors
Preliminary specification
80C554/83C554/87C554
80C51 8-bit microcontroller – 6 clock operation
16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I
2
C, PWM,
capture/compare, high I/O, 64L LQFP
2000 Nov 10
6
PIN DESCRIPTION
(Continued)
PIN NO.
MNEMONIC
LQFP
TYPE
NAME AND FUNCTION
P4.0-P4.7
14–21
14–19
20, 21
I/O
O
O
Port 4:
8-bit programmable I/O port. Alternate functions include:
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.
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-P5.6
2–8
I
Port 5:
8-bit input port.
ADC0-ADC7 (P5.0-P5.7):
Alternate function: Seven input channels to the ADC.
RST
22
I/O
Reset:
Input to reset the 87C554. It also provides a reset pulse as output when timer T3 overflows.
XTAL1
40
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
39
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
41–42
I
Digital ground.
51
O
Program Store Enable:
Active-low read strobe to external program memory.
ALE/PROG
52
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
53
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 16,384. 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
12.75 V programming supply voltage (V
PP
) during EPROM programming.
Analog to Digital Conversion Reference Resistor:
Low-end.
AV
REF–
AV
REF+
AV
SS
AV
DD
NOTE:
1. To avoid “l(fā)atch-up” effect at power-on, the voltage on any pin at any time must not be higher or lower than V
DD
+ 0.5 V or V
SS
– 0.5 V,
respectively.
62
I
63
I
Analog to Digital Conversion Reference Resistor:
High-end.
64
I
Analog Ground
1
I
Analog Power Supply
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 87C575 | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer |
| 87C576 | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators, failure detect circuitry, watchdog timer |
| 87C58 | 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER |
| 87C58SBAA | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 87C58X2 | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz |
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