at89lp428-25pu ATMEL Corporation, at89lp428-25pu Datasheet - Page 104
at89lp428-25pu
Manufacturer Part Number
at89lp428-25pu
Description
8-bit Microcontroller With 4k/8k Bytes In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89LP428-25PU.pdf
(149 pages)
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Table 18-3.
Notes:
104
Symbol
CSC
[1 - 0]
RFB
[1 - 0]
CAC
[1 - 0]
RFB
[1 - 0]
AREF = AFH
Not Bit Addressable
Bit
1. CONB (ACSRB.5) must be cleared to 0 before changing RFB [1 - 0].
2. CONA (ACSRA.5) must be cleared to 0 before changing RFA [1 - 0].
AT89LP428/828
Function
Comparator B Clock Select
Comparator B Negative Input Channel Select
Comparator A Clock Select
Comparator A Negative Input Channel Select
CBC1
CRF1
CAC1
AREF
RFA1
CBC1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
– Analog Comparator Reference Control Register
CBC0
CAC0
RFB0
RFA0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CBC0
6
Clock Source
System Clock
Timer 0 Overflow
Timer 1 Overflow
Timer 2 Overflow
B-channel
AIN2 (P2.6)
Internal V
Internal V
Internal V
Clock Source
System Clock
Timer 0 Overflow
Timer 1 Overflow
Timer 2 Overflow
A-channel
AIN1 (P2.5)
Internal V
Internal V
Internal V
RFB1
AREF-Δ
AREF
AREF+Δ
AREF-Δ
AREF
AREF+Δ
5
(~1.3V)
(~1.3V)
(~1.2V)
(~1.2V)
(~1.4V)
(~1.4V)
(1)
(2)
RFB0
4
CAC1
3
CAC0
2
Reset Value = 0000 0000B
RFA1
1
RFA0
3654A–MICRO–8/09
0
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