DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 685

• 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: -

Section 22 Power-Down Modes
Section 22 Power-Down Modes
In addition to the normal program execution state, this LSI has power-down modes in which
operation of the CPU and oscillator is halted and power consumption is reduced. Low-power
operation can be achieved by individually controlling the CPU, on-chip peripheral modules, and
so on.
This LSI’s operating modes are high-speed mode and five power down modes:
• Clock division mode
• Sleep mode
• Module stop mode
• Software standby mode
• Hardware standby mode
Sleep mode is a CPU state, clock division mode is CPU and on-chip peripheral function states,
and module stop mode is an on-chip peripheral function state. A combination of these modes can
be set.
After a reset, this LSI is in high-speed mode.
Table 22.1 shows the internal states of this LSI in each mode. Figure 22.1 shows the mode
transition diagram.
Rev.2.00 May. 28, 2009 Page 645 of 732
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