DF2134AFA20V Renesas Electronics America, DF2134AFA20V Datasheet - Page 114

• Manufacturer Part Number: DF2134AFA20V
• Description: IC H8S/2100 MCU FLASH 80QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2134AFA20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 58
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 80-QFP
• For Use With: 3DK2166 - DEV EVAL KIT H8S/2166
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 2 Instruction Descriptions
2.2.26 (1)
DEC (DECrement)
Operation
Rd – 1
Assembly-Language Format
DEC.B Rd
Operand Size
Byte
Description
This instruction decrements an 8-bit register Rd (destination operand) and stores the result in the
8-bit register Rd.
Available Registers
Rd: R0L to R7L, R0H to R7H
Operand Format and Number of States Required for Execution
Notes
An overflow is caused by the operation H'80 – 1
Rev. 4.00 Feb 24, 2006 page 98 of 322
REJ09B0139-0400
Register direct
Addressing
Mode
Rd
DEC (B)
Mnemonic
DEC.B
Operands
Rd
1st byte
1
A
Condition Code
H: Previous value remains unchanged.
N: Set to 1 if the result is negative; otherwise
Z: Set to 1 if the result is zero; otherwise
V: Set to 1 if an overflow occurs; otherwise
C: Previous value remains unchanged.
H'7F.
2nd byte
0
Instruction Format
cleared to 0.
cleared to 0.
cleared to 0.
—
I
rd
UI H
—
—
3rd byte
—
U
N
4th byte
Z
V
Decrement
—
States
No. of
C
1