DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 325

• Manufacturer Part Number: DS72030W200FPV
• Description: MPU, 32BIT, SH7203, ROMLESS, 240QFP
• Manufacturer: Renesas Electronics America
• Series: SH7200r

Specifications of DS72030W200FPV

• Core Size: 32bit
• Program Memory Size: 32KB
• Cpu Speed: 200MHz
• Digital Ic Case Style: QFP
• No. Of Pins: 240
• Supply Voltage Range: 1.1V To 1.3V
• Operating Temperature Range: -20°C To +85°C
• Svhc: No SVHC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.4.5
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.
The phase of the clock for incrementing the count in the refresh timer counter (RTCNT) is
adjusted only by a power-on reset. Note that there is an error in the time until the compare match
flag is set for the first time after the timer is started with the CKS[2:0] bits being set to a value
other than B'000.
Initial value:
Initial value:
Bit
31 to 8
7
R/W:
R/W:
Bit:
Bit:
Refresh Timer Control/Status Register (RTCSR)
Bit Name
⎯
CMF
31
15
R
R
0
0
-
-
30
14
R
R
0
0
-
-
29
13
R
R
0
0
-
-
Initial
Value
All 0
0
28
12
R
R
0
0
-
-
27
11
R
R
0
0
-
-
R/W
R
R/W
26
10
R
R
0
0
-
-
Description
Reserved
These bits are always read as 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 =
25
R
R
0
9
0
-
-
reading out RTCSR during CMF = 1.
RTCOR is satisfied.
24
R
R
0
8
0
-
-
R/W
CMF
23
R
0
7
0
-
Rev. 3.00 Sep. 28, 2009 Page 293 of 1650
CMIE
R/W
22
R
0
6
0
-
Section 9 Bus State Controller (BSC)
R/W
21
R
0
5
0
-
CKS[2:0]
R/W
20
R
0
4
0
-
R/W
19
R
0
3
0
-
REJ09B0313-0300
R/W
18
R
0
2
0
-
RRC[2:0]
R/W
17
R
0
1
0
-
R/W
16
R
0
0
0
-