DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 643
DF2437FV
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2437FV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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20.5
There are three kinds of flash memory program/erase protection: hardware, software, and error
protection.
20.5.1
Programming and erasing of flash memory is forcibly disabled or suspended by hardware
protection. In this state, the downloading of an on-chip program and initialization are possible.
However, an activated program for programming or erasure cannot program or erase the user
MAT, and the error in programming/erasing is reported in the parameter FPFR.
Table 20.9 Hardware Protection
Item
FWE pin
protection
Reset/standby
protection
Protection
Hardware Protection
Description
•
•
•
When a low level signal is input to the FWE
pin, the FWE bit in FCCS is cleared and the
program/erase-protected state is entered.
The program/erase interface registers are
initialized by a reset (including a reset by the
WDT) and in hardware standby mode and
the program/erase-protected state is
entered.
The reset state will not be entered by a reset
using the RES pin unless the RES pin is held
low until oscillation has stabilized after power
is initially supplied. In the case of a reset
during operation, hold the RES pin low for
the RES pulse width that is specified in the
section on AC characteristics. If a reset is
input during programming or erasure, data
values in the flash memory are not
guaranteed. In this case, execute erasure
and then execute programming again.
Rev.2.00 May. 28, 2009 Page 603 of 732
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⎯
Function to be Protected
Program/Erase
REJ09B0059-0200
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