HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 891

• Manufacturer Part Number: HD64F2638F20J
• Description: IC H8S MCU FLASH 256K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2638F20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
21B.14 Flash Memory and Power-Down States
In addition to its normal operating state, the flash memory has power-down states in which power
consumption is reduced by halting part or all of the internal power supply circuitry.
There are three flash memory operating states:
(1) Normal operating mode: The flash memory can be read and written to.
(2) Power-down mode: Part of the power supply circuitry is halted, and the flash memory can be
(3) Standby mode: All flash memory circuits are halted, and the flash memory cannot be read or
States (2) and (3) are flash memory power-down states. Table 21B-14 shows the correspondence
between the operating states of the LSI and the flash memory.
Table 21B-14
LSI Operating State
High-speed mode
Medium-speed mode
Sleep mode
Subactive mode *
Subsleep mode *
Watch mode *
Software standby mode
Hardware standby mode
Note: * Subclock functions (subactive mode, subsleep mode, and watch mode) are available in the
REJ09B0103-0800 Rev. 8.00
May 28, 2010
read when the LSI is operating on the subclock.
written to.
U-mask and W-mask versions only. These functions cannot be used with other versions.
Flash Memory Operating States
Flash Memory Operating State
Normal mode (read/write)
When PDWND = 0: Power-down mode (read-only)
When PDWND = 1: Normal mode (read-only)
Standby mode
(H8S/2638 Group, H8S/2639 Group, H8S/2630 Group)
Section 21B ROM
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