h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 543

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

This LSI has three on-chip keyboard buffer controller channels. The keyboard buffer controller is
provided with functions conforming to the PS/2 interface specifications.
Data transfer using the keyboard buffer controller employs a data line (KD) and a clock line
(KCLK), providing economical use of connectors, board surface area, etc. Figure 17.1 shows a
block diagram of the keyboard buffer controller.
17.1
IFKEY10A_000020020700
Conforms to PS/2 interface specifications
Direct bus drive (via the KCLK and KD pins)
Interrupt sources: on completion of data reception and on detection of clock edge
Error detection: parity error and stop bit monitoring
Features
Section 17 Keyboard Buffer Controller
Rev. 3.00 Mar 21, 2006 page 489 of 788
Section 17 Keyboard Buffer Controller
REJ09B0300-0300