HD6417727BP100BV Renesas Electronics America, HD6417727BP100BV Datasheet - Page 402
HD6417727BP100BV
Manufacturer Part Number
HD6417727BP100BV
Description
IC SUPERH MPU ROMLESS 240BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417727BP100CV.pdf
(1098 pages)
Specifications of HD6417727BP100BV
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-BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
- Current page: 402 of 1098
- Download datasheet (7Mb)
Section 12 Bus State Controller (BSC)
refresh mode to the start of auto-refreshing takes time, this time should be taken into consideration
when setting the initial value of RTCNT. Making the RTCNT value 1 less than the RTCOR value
will enable refreshing to be started immediately.
After self-refreshing has been set, the self-refresh state continues even if the chip standby state is
entered using this LSI's standby function, and is maintained even after recovery from standby
mode other than through a power-on reset. In case of a power-on reset, the bus state controller's
registers are initialized, and therefore the self-refresh state is cleared.
Self-refreshing is performed in normal operation, in sleep mode, in standby mode, and in case of a
manual reset. In addition, halt USB and LCDC before entering standby mode.
When the synchronous DRAM is used, self-refreshing is initiated in the following procedure.
1. Clear the refresh control bit to 0.
2. Write H'00 to RTCNT
3. Set the refresh control bit and refresh mode bit to 1.
Rev.6.00 Mar. 27, 2009 Page 344 of 1036
REJ09B0254-0600
CKIO, CKIO2
RD/WR
CKE
RAS
CAS
CSn
Figure 12.20 Synchronous DRAM Self-Refresh Timing
Tp
TRs1
(TRs2)
(TRs2)
TRs3
(Tpc)
(Tpc)
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