DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 613

• 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: -

17.2.3
KBBR is a read-only register that stores receive data. Its value is valid only when KBF = 1.
KBBR is 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.
17.2.4
MSTPCR, comprising two 8-bit readable/writable register, performs module stop mode control.
When the MSTP2 bit is set to 1, the keyboard buffer controller halts and enters module stop mode.
See section 25.5, Module Stop Mode, for details.
MSTPCR is initialized to H'3FFF by a reset and in hardware standby mode. It is not initialized in
software standby mode.
MSTPCRL Bit 2—Module Stop (MSTP2): Specifies keyboard buffer controller module stop
mode.
MSTPCRL
Bit 2
MSTP2
0
1
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Keyboard Data Buffer Register (KBBR)
Module Stop Control Register (MSTPCR)
Keyboard buffer controller module stop mode is cleared
Keyboard buffer controller module stop mode is set
Description
MSTP15
R/W
7
0
KB7
MSTP14
R/W
R
7
0
6
0
MSTP13
R/W
5
1
MSTPCRH
KB6
MSTP12
R/W
R
6
0
4
1
MSTP11
R/W
3
1
KB5
MSTP10
R
R/W
5
0
2
1
MSTP9
R/W
1
1
KB4
R
4
0
MSTP8
R/W
0
1
Rev. 4.00 Sep 27, 2006 page 567 of 1130
MSTP7
R/W
7
1
Section 17 Keyboard Buffer Controller
KB3
R
3
0
MSTP6
R/W
6
1
MSTP5
R/W
5
1
KB2
R
MSTPCRL
2
0
MSTP4
R/W
4
1
MSTP3
R/W
3
1
KB1
REJ09B0327-0400
R
1
0
MSTP2
R/W
2
1
(Initial value)
MSTP1
R/W
1
1
KB0
R
0
0
MSTP0
R/W
0
1