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ST90158 - EIGHT-CHANNEL ANALOG TO DIGITAL CONVERTER (A/D)
ANALOG TO DIGITAL CONVERTER (Cont’d)
CHANNEL 6 LOWER THRESHOLD REGISTER
(LT6R)
R248 - Read/Write
Register Page: 63
Reset Value: undefined
Bit 7:0 = LT6.[7:0]:
Channel 6 Lower Threshold
User-defined lower threshold value for Channel 6,
to be compared with the conversion results.
CHANNEL 7 LOWER THRESHOLD REGISTER
(LT7R)
R249 - Read/Write
Register Page: 63
Reset Value: undefined
Bit 7:0 = LT7.[7:0]:
Channel 7 Lower Threshold.
User-defined lower threshold value for Channel 7,
to be compared with the conversion results.
CHANNEL 6 UPPER THRESHOLD REGISTER
(UT6R)
R250 - Read/Write
Register Page: 63
Reset Value: undefined
Bit 7:0 = UT6.[7:0]:
Channel 6 Upper Threshold
value.
User-defined upper threshold value for Channel 6,
to be compared with the conversion results.
CHANNEL 7 UPPER THRESHOLD REGISTER
(UT7R)
R251 - Read/Write
Register Page: 63
Reset Value: undefined
Bit 7:0 = UT7.[7:0]:
Channel 7 Upper Threshold
value
User-defined upper threshold value for Channel 7,
to be compared with the conversion results.
COMPARE RESULT REGISTER (CRR)
R252 - Read/Write
Register Page: 63
Reset Value: 0000 1111 (0Fh)
These bits are set by hardware and cleared by
software.
Bit 7 = C7U:
Compare Reg 7 Upper threshold
0: Threshold not reached
1: Channel 7 converted data is greater than or
equal to UT7R threshold register value.
Bit 6 = C6U:
Compare Reg 6Upper threshold
0: Threshold not reached
1: Channel 6 converted data is greater than or
equal to UT6R threshold register value.
Bit 5 = C7L:
Compare Reg 7 Lower threshold
0: Threshold not reached
1: Channel 7 converted data is less than the LT7R
threshold register value.
Bit 4 = C6L:
Compare Reg 6 Lower threshold
0: Threshold not reached
1: Channel 6 converted data is less than the LT6R
threshold register value.
Bit 3:0 = Reserved, returns “1” when read.
Note: Any software reset request generated by
writing to the AD_ICR, will also cause all the com-
pare status bits to be cleared.
70
LT6.7 LT6.6 LT6.5 LT6.4 LT6.3 LT6.2 LT6.1 LT6.0
70
LT7.7 LT7.6 LT7.5 LT7.4 LT7.3 LT7.2 LT7.1 LT7.0
70
UT6.
7
UT6.
6
UT6.
5
UT6.
4
UT6.
3
UT6.
2
UT6.
1
UT6.
0
70
UT7.
7
UT7.
6
UT7.
5
UT7.
4
UT7.
3
UT7.
2
UT7.
1
UT7.
0
70
C7U
C6U
C7L
C6L
1
9