HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 414
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
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•
•
Cautions for Clocked Synchronous External Clock Mode:
•
•
•
Caution for Clocked Synchronous Internal Clock Mode: When receiving, RDRF = 1 when RE
is set to zero 1.5 clocks after the rise edge of the RxD D7 bit SCK input, but it cannot be copied to
RDR.
Note:
When using an external clock source for the serial clock, update the TDR with the DMAC, and
then after five system clocks or more elapse, input a transmit clock. If a transmit clock is input
in the first four system clocks after the TDR is written, an error may occur (figure 13.22).
Before reading the receive data register (RDR) with the DMAC, select the receive-data-full
interrupt of the SCI as a start-up source using the resource select bit (RS) in the channel control
register (CHCR).
Set TE = RE = 1 only when the external clock SCI is 1.
Do not set TE = RE = 1 until at least 4 clocks after the external clock SCK has changed from 0
to 1.
When receiving, RDRF = 1 when RE is set to zero 2.5–3.5 clocks after the rise edge of the
RxD D7 bit SCK input, but it cannot be copied to RDR.
TDRE
SCK
Figure 13.22 Clocked Synchronous Transmitting Example with DMAC
During external clock operation, an error may occur if t is 4 or less.
t
D0
D1
D2
D3
D4
D5
D6
RENESAS 397
D7
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