D12312SVTEBL25 Renesas Electronics America, D12312SVTEBL25 Datasheet - Page 752
![IC H8S MCU ROMLESS 100-QFP](/photos/28/61/286108/100-tqfp_sml.jpg)
D12312SVTEBL25
Manufacturer Part Number
D12312SVTEBL25
Description
IC H8S MCU ROMLESS 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of D12312SVTEBL25
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
HD6412312SVTEBL25
HD6412312SVTEBL25
HD6412312SVTEBL25
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Section 17 ROM
17.23.4 RAM Emulation Register (RAMER)
RAMER specifies the area of flash memory to be overlapped with part of RAM when emulating
real-time flash memory programming. RAMER is initialized to H'00 by a reset and in hardware
standby mode. It is not initialized in software standby mode. RAMER settings should be made in
user mode or user program mode.
Flash memory area divisions are shown in table 17.51. To ensure correct operation of the
emulation function, the ROM for which RAM emulation is performed should not be accessed
immediately after this register has been modified. Normal execution of an access immediately
after register modification is not guaranteed.
Bits 7 to 4—Reserved: These bits cannot be modified and are always read as 0.
Bit 3—RAM Select (RAMS): Specifies selection or non-selection of flash memory emulation in
RAM. When RAMS = 1, all flash memory blocks are program/erase-protected.
Bit 3
RAMS
0
1
Rev.7.00 Feb. 14, 2007 page 718 of 1108
REJ09B0089-0700
Bit
Initial value :
R/W
Description
Emulation not selected
Program/erase-protection of all flash memory blocks is disabled
Emulation selected
Program/erase-protection of all flash memory blocks is enabled
:
:
—
—
7
0
—
—
6
0
—
—
5
0
—
—
4
0
RAMS
R/W
3
0
RAM2
R/W
2
0
RAM1
R/W
1
0
(Initial value)
RAM0
R/W
0
0
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