DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 795

• 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: -

Bits 2 to 0—System Clock Select (SCK2 to SCK0): These bits select the clock for the bus
master in high-speed mode and medium-speed mode. When operating the device after a transition
to subactive mode or watch mode, bits SCK2 to SCK0 should all be cleared to 0.
25.2.2
LPWRCR is an 8-bit readable/writable register that performs power-down mode control.
LPWRCR is initialized to H'00 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bit 7—Direct-Transfer On Flag (DTON): Specifies whether a direct transition is made between
high-speed mode, medium-speed mode, and subactive mode when making a power-down
transition by executing a SLEEP instruction. The operating mode to which the transition is made
after SLEEP instruction execution is determined by a combination of other control bits.
Bit 2
SCK2
0
1
Bit
Initial value
Read/Write
Low-Power Control Register (LPWRCR)
Bit 1
SCK1
0
1
0
1
DTON
R/W
Bit 0
SCK0
0
1
0
1
0
1
—
7
0
LSON
R/W
Description
Bus master is in high-speed mode
Medium-speed clock is /2
Medium-speed clock is /4
Medium-speed clock is /8
Medium-speed clock is /16
Medium-speed clock is /32
—
6
0
NESEL
R/W
5
0
EXCLE
R/W
4
0
Rev. 4.00 Sep 27, 2006 page 749 of 1130
—
—
3
0
Section 25 Power-Down State
—
—
2
0
REJ09B0327-0400
—
—
1
0
(Initial value)
—
—
0
0