參數(shù)資料
型號(hào): CXP851P16
英文描述: CMOS 8-bit Single Chip Microcomputer
中文描述: 的CMOS 8位單片機(jī)
文件頁(yè)數(shù): 14/20頁(yè)
文件大?。?/td> 260K
代理商: CXP851P16
14
CXP851P16
Resolution
Linearity error
Zero transition
voltage
Full-scale transition
voltage
Conversion time
Sampling time
Analog Input voltage
V
ZT
1
V
FT
2
t
CONV
t
SAMP
V
IAN
AN0 to AN3
Ta = 25
°
C
V
DD
= 5.0V
Vss = 0V
10
4370
160/fc
12/fc
0
160
4530
4
±1
320
4690
V
DD
Bits
LSB
mV
mV
μs
μs
V
Item
Symbol
Pin
Condition
Min.
Typ.
Max.
Unit
(5) A/D converter characteristics
(Ta =
10 to +75
°
C, V
DD
= 4.5 to 5.5V, Vss = 0V)
Linearity error
V
ZT
V
FT
Analog input
F
H
E
H
1
H
0
H
D
Fig. 8. Definitions for A/D converter terms
1) V
ZT
: Indicates the value that digital conversion value
changes from 00
H
to 01
H
and vice versa.
2) V
FT
: Indicates the value that digital conversion value
changes from E
H
to F
H
and vice versa.
Note)
For 4-bit conversion, correction of the upper 5 bits A/D data register (ADD: address 00F5
H
) into 4 bit
data is defined according to the following program example.
(A/D converter program example)
MOV
LSR
LSR
LSR
LSR
ADC
CMP
BNE
MOV
ADC_SKIP:
A, ADD
A
A
A
A
A, #00H
A, #10H
ADC_SKIP
A, #0FH
; ACC
conversion data
; logical shift right (4 times)
;
;
;
; carry addition (if AD3 is 1, data is incremented)
;
;
;
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