M37517F8HP Datasheet, PDF (39/98 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

7517 Group
ISENS1 input
Integrate period 125 ms
Integrate period 125 ms
1.65V
Level shift circuit output
0V
2.45V
Integrator output 1.65V
0.85V
Discharge comparator
Charge comparator
Discharge counter n-6 n-5
Discharge counter latch
Charge counter
Charge counter latch
n-4
n-3
n-2
n-1
n
0
1
2
3
Count value of last integrate period
n
m
0
1 23
Count value of last integrate period
m
ISENS1 input
Level shift circuit output
2.45V
Integrator output 1.65V
0.8V
Discharge comparator
Discharge signal for integrator
Discharge counter
n-3
Fig. 45 Current integrator timing diagram
n-2
n-1
Rev.1.01 Aug 02, 2004 page 39 of 96