DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 713

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

22.8
There are three kinds of flash memory program/erase protection: hardware protection, software
protection, and error protection.
22.8.1
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 registers 1
and 2 (FLMCR1, FLMCR2) and erase block registers 1 and 2 (EBR1, EBR2). (See table 22.8.)
Table 22.8 Hardware Protection
22.8.2
Software protection can be implemented by setting the SWE bit in FLMCR1 and erase block
registers 1 and 2 (EBR1, EBR2). When software protection is in effect, setting the P or E bit in
flash memory control register 1 (FLMCR1) does not cause a transition to program mode or erase
mode. (See table 22.9.)
Item
Reset/standby
protection
Flash Memory Protection
Hardware Protection
Software Protection
Section 22 ROM
Description
In a reset (including a WDT overflow reset),
software standby mode, subactive mode,
subsleep mode, and watch 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.
(Mask ROM Version, H8S/2148 F-ZTAT, H8S/2147N F-ZTAT, H8S/2144 F-ZTAT, and H8S/2142 F-ZTAT)
Rev. 4.00 Sep 27, 2006 page 667 of 1130
Program
Yes
REJ09B0327-0400
Functions
Erase
Yes