HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 831

• 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
21A.10 Protection
There are three kinds of flash memory program/erase protection: hardware protection, software
protection, and error protection.
21A.10.1 Hardware Protection
Hardware protection refers to a state in which programming/erasing of flash memory is forcibly
disabled or aborted. Hardware protection is reset by settings in flash memory control register 1
(FLMCR1), flash memory control register 2 (FLMCR2), erase block register 1 (EBR1), and erase
block register 2 (EBR2). The FLMCR1, FLMCR2, EBR1, and EBR2 settings are retained in the
error-protected state (See table 21A-11).
Table 21A-11 Hardware Protection
Item
FWE pin protection
Reset/standby
protection
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Description
•
•
•
When a low level is input to the FWE pin,
FLMCR1, FLMCR2, (except bit FLER) EBR1,
and EBR2 are initialized, and the
program/erase-protected state is entered.
In a reset (including a WDT reset) and in
standby mode, FLMCR1, FLMCR2, EBR1,
and EBR2 are initialized, and the
program/erase-protected state is entered.
In a reset via the RES pin, the reset state is
not entered unless the RES pin is held low
until oscillation stabilizes after powering on.
In the case of a reset during operation, hold
the RES pin low for the RES pulse width
specified in the AC Characteristics section.
Program
Yes
Yes
Functions
Section 21A ROM
(H8S/2636 Group)
Erase
Yes
Yes
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