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S27KL0641 Datasheet(PDF) 7 Page - Cypress Semiconductor

Part # S27KL0641
Description  HyperRAM??Self-Refresh DRAM 3.0V/1.8V 64 Mb (8 MB)
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

S27KL0641 Datasheet(HTML) 7 Page - Cypress Semiconductor

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Document Number: 001-97964 Rev. *E
Page 7 of 29
S27KL0641, S27KS0641
ADVANCE
4. Memory Space
When CA[46] is 0 a read or write transaction accesses the DRAM memory array.
5. Register Space
When CA[46] is 1 a read or write transaction accesses the Register Space.
Note:
1. CA45 may be either 0 or 1 for either wrapped or linear read. CA45 must be 1 as only linear single word register writes are
supported.
5.1
Device Identification Registers
There are two read only, non-volatile, word registers, that provide information on the device selected when CS# is low. The device
information fields identify:
Manufacturer
Type
Density
– Row address bit count
– Column address bit count
Table 4.1 Memory Space Address Map
Unit Type
Count
System Word Address
Bits
CA Bits
Notes
Rows within 64 Mb
device
8192 (Rows)
A21 - A9
34 - 22
Row
1 (row)
A8 - A3
21 - 16
512 (word addresses)
1kbytes
Half-Page
8 (word addresses)
A2 - A0
2 - 0
16 bytes
Table 5.1 Register Space Address Map
Register
System
Address
31-27
26-19
18-11
10-3
2-0
CA Bits
47
46
45
44-40
39-32
31-24
23-16
15-8
7-0
Identification Register 0
(read only)
C0h or E0h
00h
00h
00h
00h
00h
Identification Register 1
(read only)
C0h or E0h
00h
00h
00h
00h
01h
Configuration Register 0 Read
C0h or E0h
00h
01h
00h
00h
00h
Configuration Register 0 Write
60h
00h
01h
00h
00h
00h
Configuration Register 1 Read
C0h or E0h
00h
01h
00h
00h
01h
Configuration Register 1 Write
60h
00h
01h
00h
00h
01h
Table 5.2 ID Register 0 Bit Assignments
Bits
Function
Settings (Binary)
15-14
Reserved
Reserved
13
Reserved
0 - default
12-8
Row Address Bit Count
00000 - One Row address bit
...
11111 - Thirty-two row address bits


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