HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 516

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev. 2.0, 08/02, page 476 of 788
KCLK
(pin state)
KD
(pin state)
KCLK
(input)
KCLK
(output)
KD
(input)
KD
(output)
Receive data processing
Receive operation ends
Transmit enabled state.
If there is transmit data,
the data is transmitted.
Reception in progress
Clear KBF flag
(KCLK = High)
Processing 1
normally
Figure 17.7 (2) Sample Receive Abort Processing Flowchart
Figure 17.8 Receive Abort and Transmit Start
(Transmission/Reception Switchover) Timing
Keyboard side monitors clock during
receive operation (transmit operation
as seen from keyboard), and aborts
receive operation during this period.
[1]
Receive abort request
[1] On the system side, drive the KCLK pin low,
setting the I/O inhibit state.
Transmit operation
Start bit