EM78808
8-bit Micro-controller
CMP1
P63/CMP1
P64/CMP2
P65/CMP3
MUX
MUX
MUX
PORT63
CMPIN1
CMP2
+
-
MUX
2
CMPFLAG
PORT64
CMPIN2
CMPS1
CMPS0
CMP3
PORT65
1
0
MUX
CMPIN3
VDD
VR
CMPREF
MUX
V2_0
ref.
2.0V
CMPEN
CMPEN
1/2R
1111
VRSEL
R
1110
R
MUX
0000
1/2R
4
CMP_B3 to CMP_B0
Fig.11 Comparator circuit
CMPEN
CMP1 to CMP3
reference
voltage
Setup time 10us
CPU clock
CMPFLAG
Compare start
Compare end
Fig.12 Comparator timing
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* This specification is subject to change without notice.
8/1/2004 (V3.1)
24
ELAN [ ELAN MICROELECTRONICS CORP ]
