HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 838
HD64F2638F20J
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
-
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Section 21A ROM
(H8S/2636 Group)
21A.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 21A-14 shows the correspondence
between the operating states of the LSI and the flash memory.
Table 21A-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
21A.14.1 Notes on Power-Down States
1. When the flash memory is in a power-down state, part or all of the internal power supply
Page 788 of 1458
read when the LSI is operating on the subclock * .
written to.
circuitry is halted. Therefore, a power supply circuit stabilization period must be provided
when returning to normal operation. When the flash memory returns to its normal operating
state from a power-down state, bits STS2 to STS0 in SBYCR must be set to provide a wait
time of at least 20 µs (power supply stabilization time), even if an oscillation stabilization
period is not necessary.
U-mask version only.
These functions cannot be used with the other versions.
Flash Memory Operating States
Normal mode (read/write)
When PDWND = 0: Power-down mode (read-only)
When PDWND = 1: Normal mode (read-only)
Standby mode
Flash Memory Operating State
H8S/2639, H8S/2638, H8S/2636,
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
May 28, 2010
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