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HD64F2149YV Folha de dados(PDF) 588 Page - Renesas Technology Corp

Nome de Peças HD64F2149YV
Descrição Electrónicos  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
PDF  1075 Pages
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Fabricante Electrônico  RENESAS [Renesas Technology Corp]
Página de início  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD64F2149YV Folha de dados(HTML) 588 Page - Renesas Technology Corp

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Section 17 Keyboard Buffer Controller
Rev. 3.00 Jan 18, 2006 page 560 of 1044
REJ09B0280-0300
17.1.2
Block Diagram
Figure 17.2 shows a block diagram of the keyboard buffer controller.
KD
(PS2AD,
PS2BD,
PS2CD)
KDI
KCLKI
KDO
KCLKO
Parity
Register counter value
KB interrupt
KCLK
(PS2AC,
PS2BC,
PS2CC)
Legend:
KD:
KBC data I/O pin
KCLK:
KBC clock I/O pin
KBBR:
Keyboard data buffer register
KBCRH: Keyboard control register H
KBCRL: Keyboard control register L
Control
logic
KBBR
KBCRH
KBCRL
Internal
data bus
Figure 17.2 Block Diagram of Keyboard Buffer Controller



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