HD6417705F133BV Renesas Electronics America, HD6417705F133BV Datasheet - Page 303

• Manufacturer Part Number: HD6417705F133BV
• Description: MPU 3V 0K PB-FREE 208 FP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417705F133BV

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 105
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Table 8.4
DL
0
1
When DREQ is accepted, the DREQ pin becomes request accept disabled state. After issuing
acknowledge signal DACK for the accepted DREQ, the DREQ pin again becomes request accept
enabled state.
When DREQ is used for level detection, there are the following two cases depending on the timing
to detect the next DREQ after outputting DACK. A case wherein transfer is aborted after the same
number of transfers has been performed as requests (overrun 0) and wherein another transfer is
aborted after transfers have been performed for (the number of requests plus 1) times (overrun 1).
The DO bit in CHCR selects overrun 0 or overrun 1.
Table 8.5
CHCR_0 or CHCR_1
DO
0
1
CHCR_0 or CHCR_1
Selecting External Request Detection with DL, DS Bits
Selecting External Request Detection with DO Bit
DS
0
1
0
1
External Request
Overrun 0
Overrun 1
Detection of External Request
Low level detection
Falling edge detection
High level detection
Rising edge detection
Rev. 2.00, 09/03, page 255 of 690