H8S2110B RENESAS [Renesas Technology Corp], H8S2110B Datasheet - Page 388
H8S2110B
Manufacturer Part Number
H8S2110B
Description
Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S2110B.pdf
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Section 14 Keyboard Buffer Controller
Rev. 2.00 Mar 21, 2006 page 350 of 518
REJ09B0299-0200
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 14.7 (2) Sample Receive Abort Processing Flowchart
Figure 14.8 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
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