DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 1056

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Appendix B Internal I/O Registers
KBCRH0—Keyboard Control Register H0
KBCRH1—Keyboard Control Register H1
KBCRH2—Keyboard Control Register H2
Rev. 4.00 Sep 27, 2006 page 1010 of 1130
REJ09B0327-0400
Note: * Only 0 can be written, to clear the flag.
Bit
Initial value
Read/Write
KBIOE
R/W
Keyboard in/out enable
7
0
0 The keyboard buffer controller is non-operational (KCLK and KD signal pins
1 The keyboard buffer controller is enabled for transmission and reception
have port functions)
(KCLK and KD signal pins are in the bus drive state)
KCLKI
Keyboard clock in
0 KCLK I/O pin is low
1 KCLK I/O pin is high
R
6
1
KDI
Keyboard data in
5
R
0 KD I/O pin is low
1 KD I/O pin is high
1
Keyboard buffer register full select
0 KBF bit is used as KCLK fall interrupt flag
1 KBF bit is used as keyboard buffer full flag
KBFSEL
R/W
Keyboard interrupt enable
0 Interrupt requests are disabled
1 Interrupt requests are enabled
4
1
H'FED8
H'FEDC
H'FEE0
Keyboard buffer register full
0 [Clearing condition]
1
Read KBF when KBF =1, then write 0 in KBF
[Setting conditions]
• When data has been received normally while
• When a KCLK falling edge has been detected
KBIE
KBFSEL = 1, and has been transferred to
KBBR (keyboard buffer register full flag)
while KBFSEL = 0 (KCLK interrupt flag)
R/W
3
0
Parity error
0 [Clearing condition]
1 [Setting condition]
R/(W) *
Keyboard Buffer Controller
Keyboard Buffer Controller
Keyboard Buffer Controller
KBF
Read PER when PER =1,
then write 0 in PER
When an odd parity error occurs
2
0
Keyboard stop
0 0 stop bit received
1 1 stop bit received
R/(W) *
PER
1
0
KBS
R
0
0