DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 551

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: 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): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148BTE20; HD64F2148BTE20

17.3.3
KBBR stores receive data. Its value is valid only when KBF = 1.
Bit
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Bit Name
RXCR3
RXCR2
RXCR1
RXCR0
Bit Name
KB7
KB6
KB5
KB4
KB3
KB2
KB1
KB0
Keyboard Data Buffer Register (KBBR)
Initial Value
0
0
0
0
Initial Value
0
0
0
0
0
0
0
0
R/W
R
R
R
R
R/W
R
R
R
R
R
R
R
R
Description
Receive Counter
These bits indicate the received data bit. Their value
is incremented on the fall of KCLK. These bits cannot
be modified.
The receive counter is initialized to 0000 by a reset
and when 0 is written in KBE. Its value returns to 0000
after a stop bit is received.
0000: —
0001: Start bit
0010: KB0
0011: KB1
0100: KB2
0101: KB3
0110: KB4
0111: KB5
1000: KB6
1001: KB7
1010: Parity bit
1011: —
11- - : —
Description
Keyboard Data 7 to 0
8-bit read only data.
Initialized to H'00 by a reset, in standby mode, watch
mode, subactive mode, subsleep mode, and module
stop mode, and when KBIOE is cleared to 0.
Rev. 3.00 Mar 21, 2006 page 495 of 788
Section 17 Keyboard Buffer Controller
REJ09B0300-0300