K5N1229ACD-BQ12 Datasheet, PDF (99/128 Pages) Samsung semiconductor – 512Mb (32M x16) Muxed Burst, Multi Bank SLC NOR Flash

datasheet K5N1229ACD-BQ12
Rev. 1.0
MCP Memory
7.0 BUS OPERATING MODES
The bus interface supports asynchronous and burst mode read and write transfers. The specific interface supported is defined by the value loaded into
the BCR.
7.1 Asynchronous Mode (default mode)
7.1.1 Asynchronous read operation
Asynchronous read operation starts when CS, OE and UB or LB are asserted. ADV can be taken HIGH to capture the address. First data will be driven
out of the A/DQ bus after random access time(tAA). WE should be de-asserted during read operation. The CLK input must be held static LOW during
read operation. WAIT will be driven while the device is enabled and its state should be ignored.
7.1.2 Asynchronous write operation
Asynchronous write operation starts when CS, WE and UB or LB are asserted. The data to be written is latched on the rising edge of CS, WE, or LB/UB
(whichever occurs first). OE is High during write operation. WE LOW time must be limited to tCSM. The CLK input must be held static LOW during write
operation. WAIT signal is Hi-Z.
CS
CS
A[22:16]
Address
A[22:16]
Address
ADV
OE
ADV
WE
< tCSM
LB/UB
A/DQ[15:0]
High-Z
Address
DATA
Figure 10. READ Operation WE = HIGH).
LB/UB
A/DQ[15:0]
Address
DATA
Don’t Care
Undefined
Figure 11. WRITE Operation OE = HIGH)
7.2 Functional Description (Asynch. mode)
Asynchfonous Mode
BCR[15] = 1
Read
Power
Active
CLK ADV
CS
OE
WE
CRE
UB /
LB
WAIT A/DQ[15:0] Notes
L
L
L
H
L
L
Low-Z Data out
1
Write
Active
L
L
H
L
L
L
Low-Z Data in
1
Standby
No operation
Configuration register
write
Configuration register
read
Standby
Idle
Active
Active
L
H
H
X
X
L
X
High-Z
High-Z
2
L
X
L
X
X
L
X
Low-Z
X
1
L
L
L
H
L
H
X
Low-Z
High-Z
L
L
L
H
H
L
Low-Z
Config.
Reg.out
NOTE :
1) The device will consume active power in this mode whenever addresses are changed.
2) When the device is in standby mode, address inputs and data inputs/outputs are internally isolated from any external influence.
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