3 bcramc low power register, See “lpcb: low – Rainbow Electronics AT91CAP9S250A User Manual
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6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
24.5.3
BCRAMC Low Power Register
Register Name:
BCRAMC_LPR
Access Type:
Read/Write
• PAR: Partial Array Refresh
PAR restricts the refresh operation to a portion of the total memory array.
The table below gives an example of PAR but can change with the Cellular Ram provider
.
• TCR _TCSR: Temperature Compensated Refresh or Temperature Compensated Self-refresh
TCR or TCSR refresh the device in function of difference in temperature.
The table below gives an example of TCR or TCSR but can change with the Cellular Ram provider.
• LPCB: Low Power Command Bit
00: Low Power Feature is inhibited: Standby and Deep Power mode are not issued to the Cellular Ram device.
01: The Cellular Ram device Standby mode is enabled.
10: Deep Power Down mode is enabled.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
LPCB
7
6
5
4
3
2
1
0
–
–
TCR_TCSR
–
PAR
PAR Refresh
Coverage
000
Full array
001
Bottom 1/2 array
010
Bottom 1/4 array
011
Bottom 1/8 array
100
None of 2 array
101
Top 1/2 array
110
Top 1/2 array
111
Top 1/2 array
TCR or TCSR
Temperature
11
+85° C
00
Internal sensor or +70° C
01
+45° C
10
+15° C