K5N1229ACD-BQ12 Datasheet, PDF (91/128 Pages) Samsung semiconductor – 512Mb (32M x16) Muxed Burst, Multi Bank SLC NOR Flash

datasheet K5N1229ACD-BQ12
Rev. 1.0
MCP Memory
6.2 Refresh Configuration Register
The refresh configuration register (RCR) defines how the device performs its self refresh. Altering the refresh parameters can reduce current consumption
during standby mode. The RCR is accessed with CRE HIGH and A[19:18] = 00b; or through the register access software sequence with A/DQ = 0000h on
the third cycle.
A19~A18
A/DQ2~A/DQ0
RS
PAR
Register Select
A19
A18
RS
A/DQ2
0
0
RCR
0
1
0
BCR
0
0
1
DIDR
0
0
1
1
1
1
NOTE :
1) A/DQ3, A/DQ5~A/DQ15, A16, A17, A20~A22 are reserved and should be ’0’
2) The registers are set automatically to default value.
A/DQ1
0
0
1
1
0
0
1
1
Partial Refresh
A/DQ0
0
1
0
1
0
1
0
1
PAR
Full Array (default)
Bottom 1/2 Array
Bottom 1/4 Array
Bottom 1/8 Array
None of Array
Top 1/2 Array
Top 1/4 Array
Top 1/8 Array
6.3 Burst Length (BCR[2:0]) Default = Continuous Burst
Burst lengths define the number of words the device outputs during burst READ and WRITE operations. The device supports a burst length of 4, 8, 16, or
32 words or Continuous.
6.4 Burst Wrap (BCR[3]) Default = No Wrap
The burst-wrap option determines if a 4-, 8-, 16-, or 32-word READ or WRITE burst wraps within the burst length, or steps through sequential addresses.
[Table 1] Sequence and Burst Length
Burst Wrap
Starting
Address
4 word
Burst
Length
8 word
Burst Length
16 word
Burst Length
32 word
Burst Length
Continuous
Burst
BCR[3] Wrap Decimal Linear
Linear
Linear
Linear
Linear
0
0-1-2-3
0-1-2-3-4-5-6-7
0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15
0 - 1 - 2 ~ 29-30-31 0 - 1 - 2 - 3 - 4 - 5 ~
1
1-2-3-0
1-2-3-4-5-6-7-0
1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-0
1 - 2 - 3 ~ 30-31 - 0 1 - 2 - 3 - 4 - 5 - 6 ~
2
2-3-0-1
2-3-4-5-6-7-0-1
2-3-4-5-6-7-8-9-10-11-12-13-14-15-0-1
2 - 3 - 4 ~ 31 - 0 - 1 2 - 3 - 4 - 5 - 6 - 7 ~
3
3-0-1-2
3-4-5-6-7-0-1-2
3-4-5-6-7-8-9-10-11-12-13-14-15-0-1-2
3-4-5~0-1-2 3-4-5-6-7-8 ~
~
WRAP Yes
7
~
7-0-1-2-3-4-5-6
~
7-8-9-10-11-12-13-14-15-0-1-2-3-4-5-6
~
~
7 - 8 - 9 ~ 4 - 5 - 6 7 - 8 - 9 - 10-11-12 ~
~
~
~
~
15
15-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14
15-16-17 ~ 12- 13- 14 15-16-17-18-19-20 ~
~
~
~
31
31- 0 - 1 ~ 28-29-30 31-32-33-34-35-36 ~
0
0-1-2-3 0- 1- 2- 3- 4- 5- 6 -7
0- 1- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- 12-13-14-15
0 - 1 - 2 ~ 29-30-31 0 - 1 - 2 - 3 - 4 - 5 ~
1
1-2-3-4 1- 2- 3- 4- 5- 6- 7- 8
1- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- 12-13-14-15-16
1 - 2 - 3 ~ 30-31-32 1 - 2 - 3 - 4 - 5 - 6 ~
2
2-3-4-5 2- 3- 4- 5- 6- 7- 8- 9
2- 3- 4- 5- 6- 7- 8- 9- 10- 11- 12-13-14-15-16-17
2 - 3 - 4 ~ 31-32-33 2 - 3 - 4 - 5 - 6 - 7 ~
3
3-4-5-6 3- 4- 5- 6- 7- 8- 9-10 3- 4- 5- 6- 7- 8- 9- 10- 11- 12-13-14-15-16-17-18 3 - 4 - 5 ~ 32-33-34 3 - 4 - 5 - 6 - 7 - 8 ~
~
No
WRAP
No
7
~
~
7-8-9-10-11-12-13-14
~
7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22
~
~
7 - 8 - 9 ~ 36-37-38
~
~
7 - 8 - 9 - 10-11-12 ~
~
15
15-16-17-18-19-20-21-22-23-24-25-26-27-28-29-30 15-16-17 ~ 44-45-46 15-16-17-18-19-20 ~
~
~
~
31
31-32-33 ~ 60-61-62 _{31-32-33-34-35-36 ~}
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