HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 201
HD6477021X20V
Manufacturer Part Number
HD6477021X20V
Description
MCU 5V 32K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7020r
Datasheet
1.HD6417020SVX12IV.pdf
(511 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6477021X20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 201 of 511
- Download datasheet (2Mb)
• Bit 0 (DMA master enable bit (DME)): DME enables or disables DMA transfers on all
Bit 0: DME
0
1
9.3
When there is a DMA transfer request, the DMAC starts the transfer according to the
predetermined channel priority order; when the transfer end conditions are satisfied, it ends the
transfer. Transfers can be requested in three modes: auto-request, external request, and on-chip
module request. Transfer can be in either the single address mode or the dual address mode. The
bus mode can be either burst or cycle steal
9.3.1
After the DMA source address registers (SAR), DMA destination address registers (DAR), DMA
transfer count registers (TCR), DMA channel control registers (CHCR), and DMA operation
register (DMAOR) are set, the DMAC transfers data according to the following procedure:
1. Checks to see if transfer is enabled (DE = 1, DME = 1, TE = 0, NMIF = 0, AE = 0)
2. When a transfer request comes and transfer is enabled, the DMAC transfers 1 transfer unit of
3. When the specified number of transfer have been completed (when TCR reaches 0), the
4. When an address error occurs in the DMAC or an NMI interrupt is generated, the transfer is
Figure 9.2 is a flowchart of this procedure.
182 RENESAS
channels. A channel becomes enabled for a DMA transfer when the DE bit in each DMA's
CHCR and the DME bit are set to 1. For this to be effective, however, the TE bit of each
CHCR and the NMIF and AE bits must all be 0. When the DME bit is cleared, all channel
DMA transfers are aborted.
data (for an auto-request, the transfer begins automatically when the DE bit and DME bit are
set to 1. The TCR value will be decremented by 1). The actual transfer flows vary by address
mode and bus mode.
transfer ends normally. If the IE bit of the CHCR is set to 1 at this time, a DEI interrupt is sent
to the CPU.
aborted. Transfers are also aborted when the DE bit of the CHCR or the DME bit of the
DMAOR are changed to 0.
Operation
DMA Transfer Flow
Description
Disable DMA transfers on all channels (initial value)
Enable DMA transfers on all channels
Related parts for HD6477021X20V
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT STARTER FOR M16C/29
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/2D
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
R0K33062P STARTER KIT
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/23 E8A
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/25
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER H8S2456 SHARPE DSPLY
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C38C
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C35C
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8CL3AC+LCD APPS
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR RX610
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R32C/118
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT DEV RSK-R8C/26-29
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR SH7124
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR H8SX/1622
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT DEV FOR SH7203
Manufacturer:
Renesas Electronics America
Datasheet: