參數(shù)資料
型號: P87C591SFA
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Single-chip 8-bit microcontroller with CAN controller
中文描述: 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, SOT-187-2, LCC-44
文件頁數(shù): 130/161頁
文件大?。?/td> 588K
代理商: P87C591SFA
1999 Aug 19
130
Philips Semiconductors
Objective Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
Fig.52 A/D Input: Equivalent Circuit.
handbook, full pagewidth
MHI054
MULTIPLEXER
RmN
+
1
RmN
SmN
+
1
Cc
Cs
IN
+
1
IN
SmN
Rs
+
VANALOG
input
to comparator
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 8 t
(4
μ
s @ 12 MHz crystal frequency) during which time capacitance C
S
+ C
C
is changed. It should be noted that the sampling causes the
analog input to prevent a varying load to an analog source.
Fig.53 Effective Conversion Characteristic.
handbook, full pagewidth
MHI055
101
100
011
010
001
000
0
q
q = LSB = 5 mV
+
q/2
q/2
2q
3q
4q
5q
Vin
Vin
Vin
Vdigital
CODE
OUT
QUANTIZATION ERROR
SYMMETRICAL QUANTIZATION ERROR
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