NEC 78K0R/KE3 User Manual page 801

CHAPTER 28 ELECTRICAL SPECIFICATIONS ((A) GRADE PRODUCTS)
(2) Serial interface: Serial array unit (18/18)
2
Simplified I C mode connection diagram (during communication at different potential)
Simplified I
SCL10
SDA10
Caution Select the TTL input buffer and the N-ch open drain output (V
N-ch open drain output (V
Remark R [Ω]:Communication line (SDA10, SCL10) pull-up resistance, V
b
SDA10
78K0R/KE3
SCL10
2
C mode serial transfer timing (during communication at different potential)
t
LOW
tolerance) mode for SCL10 by using the PIM0 and POM0 registers.
DD
User's Manual U17854EJ9V0UD
V V
b b
R R
b b
SDA
User's device
SCL
1/f
SCL
t
HIGH
tolerance) mode for SDA10 and the
DD
[V]: Communication line voltage
b
(A) Grade Products
t
t
HD:DAT
SU:DAT
801