HD6417727F100CV Renesas Electronics America, HD6417727F100CV Datasheet - Page 420
HD6417727F100CV
Manufacturer Part Number
HD6417727F100CV
Description
SH3-DSP, LEAD FREE
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417727BP100CV.pdf
(1098 pages)
Specifications of HD6417727F100CV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
100MHz
Connectivity
FIFO, SCI, SIO, SmartCard, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
104
Program Memory Type
ROMless
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.6 V ~ 2.05 V
Data Converters
A/D 6x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
240-QFP Exposed Pad, 240-eQFP, 240-HQFP
Cpu Family
SuperH
Device Core Size
32b
Frequency (max)
100MHz
Interface Type
SCI/USB
Program Memory Size
Not Required
Total Internal Ram Size
16KB
# I/os (max)
104
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
1.8/3.3V
Operating Supply Voltage (max)
2.05/3.6V
Operating Supply Voltage (min)
1.6/2.6V
On-chip Adc
6-chx10-bit
On-chip Dac
2-chx8-bit
Instruction Set Architecture
RISC
Operating Temp Range
-20C to 75C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
240
Package Type
HQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Compliant
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Section 12 Bus State Controller (BSC)
12.3.7
Waits between Access Cycles
A problem associated with higher external memory bus operating frequencies is that data buffer
turn-off on completion of a read from a low-speed device may be too slow, causing a collision
with data in the next access. This results in lower reliability or incorrect operation. To avoid this
problem, a data collision prevention feature has been provided. This memorizes the preceding
access area and the kind of read/write. If there is a possibility of a bus collision when the next
access is started, a wait cycle is inserted before the access cycle thus preventing a data collision.
There are two cases in which a wait cycle is inserted: when an access is followed by an access to a
different area, and when a read access is followed by a write access from this LSI. When this LSI
performs consecutive write cycles, the data transfer direction is fixed (from this LSI to other
memory) and there is no problem. With read accesses to the same area, in principle, data is output
from the same data buffer, and wait cycle insertion is not performed. Bits AnIW1 and AnIW0 (n =
0, 2 to 6) in WCR1 specify the number of idle cycles to be inserted between access cycles when a
physical space area access is followed by an access to another area, or when this LSI performs a
write access after a read access to physical space area n. If there is originally space between
accesses, the number of idle cycles inserted is the specified number of idle cycles minus the
number of empty cycles.
Waits are not inserted between accesses when bus arbitration is performed, since empty cycles are
inserted for arbitration purposes.
Rev.6.00 Mar. 27, 2009 Page 362 of 1036
REJ09B0254-0600
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