DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 327

• Manufacturer Part Number: DF71251AD50FPV
• Description: MCU RISC FLASH 32K 8K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Tinyr

Specifications of DF71251AD50FPV

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Figure 9.71 Example of Operation when Buffer Transfer is Linked with Interrupt Skipping
Buffer transfer-enabled period
Buffer transfer-enabled period
(1) When rewriting a buffer register within a carrier cycle after TGIA_3 interrupt occurred.
(2) When rewriting a buffer register after a carrier cycle passed from occurring TGIA_3 interrupt.
Temporary register
Temporary register
Compare register
Compare register
Buffer register
Buffer register
TITCNT[6:4]
TITCNT[6:4]
Note: * Buffer transfer at the crest is selected.
TITCR[6:4]
TITCR[6:4]
The skipping count is set to two.
T3AEN is set to 1.
TGIA_3 interrupt occurred
TGIA_3 interrupt occurred
TCNT_4
TCNT_4
Buffer register rewriting timing
Data
Data
Data
TCNT_3
TCNT_3
0
0
(BTE1 = 1 and BTE0 = 0)
Data
Data
Data
Buffer register rewriting timing
1
1
2
2
TGIA_3 interrupt occurred
TGIA_3 interrupt occurred
Data1
Data1
Rev. 5.00 Mar. 06, 2009 Page 307 of 770
Data1
2
2
Buffer register rewriting timing
0
0
REJ09B0243-0500
Data1
Data1
Data1
1
1
Data2
Data2
Data2