HD6417041AVF16V Renesas Electronics America, HD6417041AVF16V Datasheet - Page 186

• Manufacturer Part Number: HD6417041AVF16V
• Description: IC SUPERH MCU ROMLESS 144QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7040r

Specifications of HD6417041AVF16V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 28.7MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 98
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 6 Instruction Descriptions
6.1.22
Format Abstract
DT Rn Rn – 1
Description: The contents of general register Rn are decremented by 1 and the result compared to
0 (zero). When the result is 0, the T bit is set to 1. When the result is not zero, the T bit is set to 0.
Operation:
Example:
Rev. 5.00 Jun 30, 2004 page 170 of 512
REJ09B0171-0500O
DT(long n)/* DT Rn */
{
}
LOOP:
R[n]--;
if (R[n]==0) T=1;
else T=0;
PC+=2;
DT (Decrement and Test): Arithmetic Instruction
When Rn is 0,
1
when Rn is nonzero,
0
MOV
ADD
DT
BF
T,
T
Rn;
#4,R5
R0,R1
RS
LOOP
Code
0100nnnn00010000 1
; Sets the number of loops.
;
; Decrements the R5 value and checks whether it has become 0.
; Branches to LOOP is T=0. (In this example, loops 4 times.)
Cycle T Bit
Comparison
result
SH-1 SH-2
—
Instructions
Applicable
SH-
DSP