HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 167
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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•
AD15–
A21–
RAS Up Mode: When the RASD bit is cleared to 0, the RAS signal reverts to high whenever a
DRAM access pauses for access to another space. Burst operation continues only while
DRAM access is continuous. Figure 8.28 shows the timing when an external memory space
access occurs during burst operation in the RAS up mode.
RAS
CAS
AD0
WR
CK
A0
T
p
Row address
T r
DRAM access
address 1
Column
Figure 8.27 RAS Down Mode
T
c
Data 1
address 2
Column
T
c
External memory
Data 2
space access
External
memory
memory data
T1
External
address 3
Column
DRAM access
T
c
Data 3
address 4
Column
T
RENESAS 147
c
Data 4
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