HD6417708SF60V Renesas Electronics America, HD6417708SF60V Datasheet - Page 319
HD6417708SF60V
Manufacturer Part Number
HD6417708SF60V
Description
IC SUPERH MPU ROMLESS 208LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417708SF60V.pdf
(635 pages)
Specifications of HD6417708SF60V
Core Processor
SH-2
Core Size
32-Bit
Speed
60MHz
Connectivity
EBI/EMI, SCI, SmartCard
Peripherals
POR, WDT
Number Of I /o
8
Program Memory Type
ROMless
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
208-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Ram Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417708SF60V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD6417708SF60V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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10.4.4
In the SH7708 Series (SH7708, SH7708S, SH7708R), if an SDRAM auto-refresh (CAS-before-
RAS) request occurs during an area 6 PCMCIA area access, CS6 is simultaneously asserted, in
addition to the CS signal for the area to be accessed, when the auto-refresh is performed.
If the following specifications are made, CS3 and CS6 will be asserted simultaneously:
Area 3: SDRAM
Area 6: PCMCIA
CS6 remains asserted until the end of the following PCMCIA bus cycle.
Restrictions: When using PCMCIA in area 6 and also using SDRAM, the area 6 CS signal (CS6)
may be asserted earlier than usual, at the same time as the preceding auto-refresh cycle.
Remedy: This anomaly occurs only in area 6. There is no problem with area 5.
Therefore, if use of both SDRAM and PCMCIA in the system is being considered, area 5 should
be used.
If area 6 is used, the system design should allow for CS to be asserted early without causing any
problems.
CKIO
CS3
RAS
BS
CS6
PCMCIA Area Access
Auto-refresh
cycle
CS (CS3) asserted
in CAS-before-RAS
refresh
PCMCIA area CS
(CS6) asserted
PCMCIA cycle
299
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