HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 425
HD6417712BPV
Manufacturer Part Number
HD6417712BPV
Description
MPU 1.5/3.3V 0K PB-FREE 256-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH Ethernetr
Datasheet
1.HD6417712BPV.pdf
(980 pages)
Specifications of HD6417712BPV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, Ethernet, FIFO, SCI, SIO
Peripherals
DMA, POR, WDT
Number Of I /o
24
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417712BPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 425 of 980
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12.4.5
RTCSR specifies various items about refresh for SDRAM.
When RTCSR is written, the upper 16 bits of the write data must be H’A55A to cancel write
protection.
Bit
31 to 8
7
6
5
4
3
CMF
CMIE
CKS2
CKS1
CKS0
Bit Name
Refresh Timer Control/Status Register (RTCSR)
Initial
Value
All 0
0
0
0
0
0
R/W
R
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Compare Match Flag
Indicates that a compare match occurs between the refresh
timer counter (RTCNT) and refresh time constant register
(RTCOR). This bit is set or cleared in the following
conditions.
0: Clearing condition: When 0 is written in CMF after
1: Setting condition: When the condition RTCNT = RTCOR
Compare Match Interrupt Enable
Enables or disables a CMF interrupt request when the CMF
bit of RTCSR is set to 1.
0: Disables the CMF interrupt request
1: Enables the CMF interrupt request
Clock Select
Select the clock input to count-up the refresh timer counter
(RTCNT).
000: Stop the counting-up
001: Bφ/4
010: Bφ/16
011: Bφ/64
100: Bφ/256
101: Bφ/1024
110: Bφ/2048
111: Bφ/4096
reading out RTCSR during CMF = 1.
is satisfied.
Rev. 1.00 Dec. 27, 2005 Page 381 of 932
Section 12 Bus State Controller (BSC)
REJ09B0269-0100
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