Z51F0410 Datasheet, PDF (156/184 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F0410
Product Specification
7.2.2.4 Acknowledge bit
Data output
by transmitter
Data output
By receiver
DSCL from
master
no acknowledge
1
2
acknowledge
9
10
clock pulse for acknowledgement
Figure 7.6 Acknowledge on the serial bus
Acknowledge bit
transmission
Minimum 500ns
Host PC
DSCL OUT
wait HIGH
start HIGH
Acknowledge bit
transmission
Target Device
DSCL OUT
DSCL
Start wait
Maximum 5 T _SCLK
minimum 1 T _SCLK
for next byte
transmission
Internal Operation
Figure 7.7 Clock synchronization during wait procedure
7.2.3 Connection of transmission
Two-pin interface connection uses open-drain (wire-AND bidirectional I/O).
PS029501-0212
PRELIMINARY
153