D12312SVTE25 Renesas Electronics America, D12312SVTE25 Datasheet - Page 735
![MCU 3V 0K 100-TQFP](/photos/28/61/286108/100-tqfp_sml.jpg)
D12312SVTE25
Manufacturer Part Number
D12312SVTE25
Description
MCU 3V 0K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet
1.D12312SVTE25V.pdf
(1146 pages)
Specifications of D12312SVTE25
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
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-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Other names
HD6412312SVTE25
HD6412312SVTE25
HD6412312SVTE25
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
D12312SVTE25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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- Download datasheet (7Mb)
(4) Flash Key Code Register (FKEY)
FKEY is a register for software protection that enables download of on-chip program and
programming/erasing of flash memory. Before setting the SCO bit to 1 in order to download on-
chip program or executing the downloaded programming/erasing program, these processing
cannot be executed if the key code is not written.
Bits 7 to 0—Key Code (K7 to K0): Only when H'A5 is written, writing to the SCO bit is valid.
When the value other than H'A5 is written to FKEY, 1 cannot be written to the SCO bit. Therefore
downloading to the on-chip RAM cannot be executed.
Only when H'5A is written, programming/erasing can be executed. Even if the on-chip
programming/erasing program is executed, flash memory cannot be programmed or erased when
the value other than H'5A is written to FKEY.
Bits 7 to 0
K7 to K0
H'A5
H'5A
H'00
Bit
Initial value :
R/W
:
:
Description
Writing to the SCO bit is enabled (The SCO bit cannot be set by the value other
than H'A5.)
Programming/erasing is enabled (The value other than H'5A is in software
protection state.)
Initial value
R/W
K7
7
0
R/W
K6
6
0
R/W
K5
5
0
R/W
K4
4
0
Rev.7.00 Feb. 14, 2007 page 701 of 1108
R/W
K3
3
0
R/W
K2
2
0
REJ09B0089-0700
R/W
Section 17 ROM
K1
1
0
R/W
K0
0
0
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