DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 109

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• 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: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

2.9
2.9.1
Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction. The TAS
instruction is not generated by the H8S and H8/300 Series C/C++ compilers. If the TAS
instruction is used as a user-defined intrinsic function, ensure that only register ER0, ER1, ER4, or
ER5 is used.
2.9.2
With the STM or LDM instruction, the ER7 register is used as the stack pointer, and thus cannot
be used as a register that allows save (STM) or restore (LDM) operation.
With a single STM or LDM instruction, two to four registers can be saved or restored. The
available registers are as follows:
For two registers: ER0 and ER1, ER2 and ER3, or ER4 and ER5
For three registers: ER0 to ER2, or ER4 to ER6
For four registers: ER0 to ER3
For the H8S or H8/300 Series C/C++ Compiler, the STM/LDM instruction including ER7 is not
created.
2.9.3
When bit-manipulation is used with registers that include write-only bits, bits to be manipulated
may not be manipulated properly or bits unrelated to the bit-manipulation may be changed.
Some values read from write-only bits are fixed and some are undefined. When such bits are the
operands of bit-manipulation instructions that use read values in arithmetic operations (BNOT,
BTST, BAND, BIAND, BOR, BIOR, BXOR, BIXOR, BLD, BILD), the desired bit-manipulation
will not be executed.
Also, bit-manipulation instructions that write back data according to the results of arithmetic
operations (BSET, BCLR, BNOT, BST, BIST) may change bits that are not related to the bit-
manipulation. Therefore, special care is necessary when using these instructions with registers that
include write-only bits.
Usage Notes
TAS Instruction
STM/LDM Instruction
Bit Manipulation Instructions
Rev. 6.00 Sep. 24, 2009 Page 61 of 928
REJ09B0099-0600
Section 2 CPU