DF2505FC26V Renesas Electronics America, DF2505FC26V Datasheet - Page 744

• Manufacturer Part Number: DF2505FC26V
• Description: IC H8S/2505 MCU FLASH 144QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505FC26V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 20 Flash Memory
20.3.3
When the real-time programming of the user MAT is emulated, RAMER sets the area of the user
MAT which is overlapped with a part of the on-chip RAM. RAMER is initialized to H'00 at a
power-on reset or in hardware standby mode and is not initialized in software standby mode or in
watch mode. The RAMER setting must be executed in user mode or in user program mode.
For the division method of the user-MAT area, see table 20.6. In order to operate the emulation
function certainly, the target MAT of the RAM emulation must not be accessed immediately after
RAMER is programmed. If it is accessed, the normal access is not guaranteed.
Rev. 6.00 Sep. 24, 2009 Page 696 of 928
REJ09B0099-0600
Bit
7 to 5
4
3
2
1
0
Bit Name
⎯
⎯
RAMS
RAM2
RAM1
RAM0
RAM Emulation Register (RAMER)
Initial
Value
All 0
0
⎯
0
0
0
R/W
R
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Reserved
The write value should always be 0.
RAM Select
Sets whether the user MAT is emulated or not. When
RAMS = 1, all blocks of the user boot MAT are in the
programming/erasing protection state.
0: RAM emulation function is invalid
1: RAM emulation function is valid
User MAT Area Select
These bits are used with bit 3 and select the user-MAT
area to be overlapped with the on-chip RAM. (See table
20.6.)
All blocks of the user MAT are not in the
programming/erasing protection state
All blocks of the user MAT are in the
programming/erasing protection state