HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 480

• 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: -

RENESAS 468
WRH, WRL,
WRH, WRL,
Notes: 1.
AD15–AD0
AD15–AD0
DPH, DPL
RD(Read)
DPH, DPL
RD(Write)
A21–A0
DACK0
DACK1
DACK0
DACK1
(Read)
(Read)
(Read)
(Write)
(Write)
(Write)
(Write)
RAS
CAS
2.
3.
4.
5.
Figure 19.14 DRAM Bus Cycle: (Long Pitch, High-Speed Page Mode)
CK
For t
For t
For t
t
t
RDH
RDH
CAC2
ACC2
RAC2
is measured from A21–A0 or CAS, whichever is negated first.
is measured from A21–A0, RAS, or CAS whichever is negated first.
T
p
, use t
, use t
, use t
t
t
RAC2
AD
cyc
cyc
cyc
T
r
t
*
Row
RASD1
3
(n + 1) – 25 instead of t
(n + 2) – 30 instead of t
(n + 2.5) – 20 instead of t
t
t
AD
RDD
T
c1
t
t
t
t
t
t
ACC2
DACD1
WSD1
WDD1
WPDD1
DACD3
t
Column
CASD2
*
2
t
CAC2
T
c2
t
t
WSD2
DACD3
*
t
t
cyc
cyc
RDS
DACD2
1
cyc
t
WPDH
t
t
RSD
WDH
t
t
CASD3
RDH
(n + 1) – t
(n + 2) – t
T
(n + 2.5) – t
c1
t
t
t
t
t
*
WSD1
WDD1
DACD3
WPDD1
DACD1
4
Column
CASD2
AD
T
c2
– t
t
t
RASD1
DACD3
WSD2
RDS
– t
RDS
t
t
t
.
WPDH
DACD2
WDH
– t
t
t
t
CASD3
RDH
RASD2
RDS
.
*
.
5