h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 386

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Note:
Rev. 1.00, 05/04, page 352 of 544
Bit
3
2
1
0
*
Bit Name
KBIE
KBF
PER
KBS
Only 0 can be written for clearing the flag.
0
Initial
Value
0
0
0
R/W
R/W
R/(W)*
R/(W)*
R
Description
Keyboard Interrupt Enable
Enables or disables interrupts from the keyboard buffer
controller to the CPU.
0: Interrupt requests are disabled
1: Interrupt requests are enabled
Keyboard Buffer Register Full
Indicates that data reception has been completed and
the received data is in KBBR.
0: [Clearing condition]
Read KBF when KBF =1, then write 0 in KBF
1: [Setting conditions]
•
•
Parity Error
Indicates that an odd parity error has occurred.
0: [Clearing condition]
Read PER when PER =1, then write 0 in PER
1: [Setting condition]
When an odd parity error occurs
Keyboard Stop
Indicates the receive data stop bit. Valid only when
KBF = 1.
0: 0 stop bit received
1: 1 stop bit received
When data has been received normally and has
been transferred to KBBR while KBFSEL = 1
(keyboard buffer register full flag)
When a KCLK falling edge is detected while
KBFSEL = 0 (KCLK interrupt flag)