HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 221

• Manufacturer Part Number: HD6477021X20V
• Description: MCU 5V 32K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7020r

Specifications of HD6477021X20V

• Core Processor: SH-1
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

202 RENESAS
detection and DACK active low) (Single address mode, bus cycle = DRAM bus cycle (long
detection and DACK active low) (Dual address mode, bus cycle = DRAM bus cycle (long
Note:
Note:
Figure 9.19 DREQ Sampling Timing in Cycle Steal Mode (Output with DREQ level
Figure 9.20 DREQ Sampling Timing in Cycle Steal Mode (Output with DREQ level
Bus cycle
Bus cycle
DREQ
DACK
DREQ
DACK
When DREQ is negated at the fourth state of the DMAC cycle, the next DMA transfer
will be executed because the sampling is done at the second state of the DMAC cycle.
When DREQ is negated at the fourth state of the DMAC cycle, the next DMA transfer
will be executed because the sampling is done at the second state of the DMAC cycle.
CK
CK
CPU
CPU
CPU
CPU
CPU
CPU
pitch normal mode))
pitch normal mode))
Tp
DMAC(R)
Tr
Tp
Tc
DMAC
Tr
Tc
Tc
DMAC
(W)
Tc
CPU
CPU
DMAC (W): DMAC write cycle
DMAC (R): DMAC read cycle
Tp
DMAC (R)
Tp
Tr
Tc
DMAC
Tr
Tc
Tc
DMAC
Tc
(W)
CPU
CPU