DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 678

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

21.1
The clock pulse generator has the following register.
• System clock control register (SCKCR)
21.1.1
SCKCR controls φ output and selects the division ratio for the divider.
Rev.2.00 May. 28, 2009 Page 638 of 732
REJ09B0059-0200
Bit
7
6 to 3
Register Description
System Clock Control Register (SCKCR)
Bit Name
PSTOP
⎯
Initial Value
0
All 0
R/W
R/W
R/W
Description
φ Output Disabled
Controls φ output.
In normal operation:
0: φ output
1: Fixed to high
In sleep mode:
0: φ output
1: Fixed to high
In software standby mode:
0: Fixed to high
1: Fixed to high
In hardware standby mode:
0: High impedance
1: High impedance
Reserved
Although these bits are readable/writable, only 0
should be written here.