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)： 28/76頁(yè)
文件大小： 400K
代理商： 87C554
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
28
R
S
V
ANALOG
INPUT
C
S
C
C
TO COMPARATOR
+
I
N
I
N+1
Sm
N+1
Sm
N
Rm
N+1
Rm
N
MULTIPLEXER
Rm = 0.5 - 3 k
C
S
+ C
C
= 15 pF maximum
R
S
= Recommended < 9.6 k
for 1 LSB @ 12 MHz
NOTE:
Because the analog to digital converter has a sampled-data comparator, the input looks capacitive to a source. When a conversion
is initiated, switch Sm closes for 8t
CY
(4
μ
s @ 12 MHz crystal frequency) during which time capacitance C
S
+ C
C
is charged. It
should be noted that the sampling causes the analog input to present a varying load to an analog source.
SU01449
Figure 25. A/D Input: Equivalent Circuit
0
q
2q
3q
4q
5q
V
in
CODE
OUT
100
000
001
010
011
101
QUANTIZATION ERROR
q = LSB = 5 mV
V
in
– V
digital
+ q/2
– q/2
V
in
SYMMETRICAL QUANTIZATION ERROR
SU00963
Figure 26. Effective Conversion Characteristic
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
87C575 制造商:PHILIPS 制造商全稱: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: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: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: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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