D12312SVF20V Renesas Electronics America, D12312SVF20V Datasheet - Page 773
D12312SVF20V
Manufacturer Part Number
D12312SVF20V
Description
IC H8S/2312S MCU ROMLESS 100QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of D12312SVF20V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
70
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-QFP
For Use With
EDK2329 - DEV EVALUATION KIT H8S/2329
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
D12312SVF20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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17.25.2 Software Protection
Software protection is set up in any of three ways: by disabling the downloading of on-chip
programs for programming and erasing, by means of a key code, and by the RAM-emulation
register.
Table 17.55 Software Protection
Item
Protection by the
SCO bit
Protection by the
FKEY register
Emulation protection •
17.25.3 Error Protection
Error protection is a mechanism for aborting programming or erasure when an error occurs, in the
form of the microcomputer entering runaway during programming/erasing of the flash memory or
operations that are not according to the established procedures for programming/erasing. Aborting
programming or erasure in such cases prevents damage to the flash memory due to excessive
programming or erasing.
If the microcomputer malfunctions during programming/erasing of the flash memory, the FLER
bit in the FCCS register is set to 1 and the device enters the error-protection state, and this aborts
the programming or erasure.
The FLER bit is set in the following conditions:
Description
•
•
Clearing the SCO bit in the FCCS
register makes the device enter a
program/erase-protected state, and
this disables the downloading of the
programming/erasing programs.
Downloading and
programming/erasing are disabled
unless the required key code is
written in the FKEY register. Different
key codes are used for downloading
and for programming/erasing.
Setting the RAMS bit in the RAM
emulation register (RAMER) makes
the device enter a program/erase-
protected state.
Rev.7.00 Feb. 14, 2007 page 739 of 1108
Download
Function to Be Protected
REJ09B0089-0700
Section 17 ROM
Program/Erase
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