H8S2110B RENESAS [Renesas Technology Corp], H8S2110B Datasheet - Page 386
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 348 of 518
REJ09B0299-0200
KCLK
(pin state)
KD
(pin state)
KCLK
(output)
KD
(output)
KCLK
(input)
KD
(input)
Note:* To switch to reception after transmission, set KBE to 1 (KBBR receive enable) while KCLKI is low.
(KCLK = high, KD = high)
*
To receive operation or
Transmit end state
transmit operation
[1] [2] [3] [4] [5]
Read KBCRH
Read KBCRH
KCLKI = 0?
KCLK = 1?
KDI = 0?
I/O inhibit
1
Yes
Yes
Yes
Figure 14.5 (2) Sample Transmit Processing Flowchart
Start bit
Start bit
[6]
No
No
No
1
Figure 14.6 Transmit Ti
0
0
[7]
[8]
2
Error handling
1
1
8
m
ing
7
7
9
Parity bit Stop bit
Parity bit Stop bit
Keyboard side in data
Execute receive abort
transmission state.
processing.
10
2
Receive
completed
notification
[7]
11
[8]
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