124
64Mb CellularRAM Type 2
CellRam_03_A0 March 9, 2005
Advan c e
Inf o rmation
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Table 21.4
Refresh Configuration Register Mapping
Table 21.5
64Mb Address Patterns for PAR (RCR[4] = 1)
RCR[2]
RCR[1]
RCR[0]
Active Section
Address Space
Size
Density
)XOOGLH
K±)))))K
0HJ [
0E
2QHKDOI RI GLH
K±)))))K
0HJ [
0E
2QHTXDUWHU RIGLH
K±)))))K
0HJ [
0E
2QHHLJKWK RI GLH
K±)))))K
. [
0E
1RQH RI GLH
0HJ[
0E
2QHKDOI RI GLH
K±)))))K
0HJ [
0E
2QHTXDUWHU RIGLH
K±)))))K
0HJ [
0E
2QHHLJKWK RI GLH
K±)))))K
. [
0E
PAR
A4
A3
A2
A1
A0
Read Configuration
Register
Address Bus
A5
A6
All must be set to "0"
0
1
Deep Power-Down
DPD Enable
DPD Disable (default)
RCR[4]
A[18:8]
Register
Select
Reserved
TCR
A[21:20]
A19
0
1
Register Select
Select RCR
Select BCR
RCR[19]
All must be set to "0"
RCR[1] RCR[0]
Refresh Coverage
RCR[2]
0
Full array (default)
0
1
Bottom 1/2 array
0
1
0
Bottom 1/4 array
0
1
Bottom 1/8 array
0
01
1
Top 1/2 array
10
1
Top 1/4 array
DPD
Must be set to "0"
A7
Page
0
1
Page Mode Enable/Disable
Page Mode Disabled (default)
Page Mode Enable
RCR[7]
4
51
2
30
6
18–8
19
21–20
7
1
None of array
00
1
Top 3/4 array
11
RCR[6]
RCR[5]
Maximum Case Temp
+85C (default)
11
00
01
10
+70C
+45C
+15C