µPD72850A
Figure 3-3. Isolation Barrier Circuits
(a) CTL0,CTL1, D0-Dn Isolation Barrier Circuit
Link
LinkVDD
Required when LinkVD D is 5 V
DVDD
µPD72850A
5 kΩ
100 Ω
5 kΩ
0.001 µF
5 kΩ
0.001 µF
5 kΩ
300 Ω
LinkGND LinkGND
DGND
(b) Link-on Isolation Barrier Circuit
Link
LinkVDD
100 Ω
5 kΩ
0.001 µF
1.6 kΩ
µPD72850A
LinkGND
(c) LPS Isolation Barrier Circuit
Link
DVDD
8.4 kΩ
0.033 µF
1.6 kΩ
10 kΩ
µPD72850A
DGND
Link
(d) LREQ Isolation Barrier Circuit
LinkVDD
Required when LinkVD D is 5 V
DVDD
µPD72850A
5k Ω
100 Ω
5 kΩ
0.001 µF
5 kΩ
0.001 µF
5 kΩ
300 Ω
LinkGND LinkGND
DGND
(e) SCLK Isolation Barrier Circuit
Link
LinkVDD
5 kΩ
DVDD
5 kΩ
µPD72850A
0.001 µF
5 kΩ
LinkGND
5 kΩ
DGND
Data Sheet S14452EJ1V0DS00
17