HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 493

• 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: -

Notes: 1.
Figure 19.25 (a) DRAM Bus Cycle (Short-Pitch, High-Speed Page Mode: Read)
WRH, WRL ,
AD15–AD0
WR (Read)
DPH, DPL
RD(Read)
2.
3.
4.
5.
A21–A0
DACK0
DACK1
(Read)
(Read)
For t
of t
It is not necessary to meet the t
met.
For t
It is not necessary to meet the t
met.
For t
It is not necessary to meet the t
met.
t
t
RAS
CAS
RDH
RDH
CK
cyc
is measured from A21—A0 or CAS, whichever is negated first.
is measured from A21—A0, RAS, or CAS, whichever is negated first.
CAC1
ACC1
RAC1
– t
, use t
, use t
, use t
AD
– t
T
p
ASC
cyc
cyc
cyc
t
RASD1
– 44 instead of t
– t
t
RAC1
t
AD
0.65 – 35 (for 35% duty) or t
1.5 – 35 instead of t
RDS
T
Row address
*
.
r
3
t
ACC1
t
RDD
t
AD
*
t
Column address
T
2
t
DACD1
CAC1
RDS
RDS
RDS
c
t
ASC
t
cyc
RDS
specification as long as the t
specification as long as the t
specification as long as the t
*
– t
1
t
RSD
t
t
DACD2
RDH
AD
Column address
t
cyc
t
CP
ACP
T
– t
c
*
4
RDS
1.5 – t
.
cyc
Column address
T
RASD1
c
0.5 – 35 (for 50% duty) instead
– t
RDS
Column address
T
c
.
CAC1
ACC1
RAC1
t
t
RDH
RASD2
specification is
specification is
specification is
RENESAS 481
*
5