HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 492

• 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 480
Notes: 1.
WRH, WRL,
WRH, WRL,
AD15–AD0
AD15–AD0
DPH, DPL
DPH, DPL
RD(Write)
RD(Read)
A21–A0
DACK0
DACK1
DACK0
DACK1
(Read)
(Read)
(Read)
(Write)
(Write)
(Write)
(Write)
2.
3.
4.
RAS
CAS
CK
For t
instead of t
For t
For t
t
RDH
Figure 19.24 DRAM Bus Cycle (Short Pitch, Normal Mode)
CAC1
ACC1
RAC1
is measured from A21–A0, RAS, or CAS, whichever is negated first.
, use t
, use t
, use t
cyc
T
– t
cyc
cyc
cyc
p
AD
– 44 instead of t
– t
0.65 – 35 (for 35% duty) or t
1.5 – 35 instead of t
ASC
t
AD
t
RASD1
– t
RDS
T
r
.
t
WPDD2
Row
t
cyc
WSD3
t
RAH
– t
t
cyc
ACC1
t
t
t
t
AD
t
DACD4
AD
RDD
WDD2
RAC1
– t
*
t
2
WCS
1.5 – t
*
RDS
3
T
t
cyc
Column
CAC1
c
t
t
t
ASC
DACD1
DACD5
.
t
RASD1
DS
*
1
t
0.5 – 35 (for 50% duty)
WCH
t
RDS
t
t
t
t
t
t
WPDH
DACD2
RASD2
CASD1
WDH
RSD
– t
RDS
t
WSD4
t
.
RDH
*
4