DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 471

• 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: -

Table 14.3 Switching of Internal Clock and TWCNT Operation
No.
1
2
3
Timing of Switchover by
Means of CKS2 to CKS0
Bits
Switching from
low to low*
Switching from
low to high*
Switching from
high to low*
1
2
3
TWCNT Operation
before switchover
before switchover
before switchover
after switchover
after switchover
after switchover
TWCNT clock
TWCNT clock
TWCNT clock
TWCNT
TWCNT
TWCNT
Clock
Clock
Clock
Clock
Clock
Clock
Switchover of CKS bit
N
N
N
Switchover of CKS bit
Rev.2.00 May. 28, 2009 Page 431 of 732
N+1
N+1
Switchover of CKS bit
N+1
*
4
N+2
N+2
REJ09B0059-0200