DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 492

• 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: -

Note: x: Don’t care.
Rev.2.00 May. 28, 2009 Page 452 of 732
REJ09B0059-0200
Bit
1
0
Bit Name
CKE1
CKE0
Initial Value
0
0
R/W
R/W
R/W
Description
Clock Enable 1, 0
These bits select the clock source and SCK pin
function.
Asynchronous mode
00: Internal clock
01: Internal clock
1x: External clock
Clocked synchronous mode
0x: Internal clock (SCK pin functions as clock
1x: External clock (SCK pin functions as clock
(SCK pin functions as I/O port.)
(Outputs a clock of the same frequency as the
bit rate from the SCK pin.)
(Inputs a clock with a frequency 16 times the bit
rate to the SCK pin.)
output.)
input.)