FLASH MEMORY

5

K9K1216D0C

K9K1216U0C

K9K1208D0C

K9K1208U0C

K9K1208Q0C

K9K1216Q0C

PIN DESCRIPTION

Pin Name

Pin Function

(K9K1208X0C)

(K9K1216X0C)

DATA INPUTS/OUTPUTS

The I/O pins are used to input command, address and data, and to output data during read operations. The I/

O pins float to high-z when the chip is deselected or when the outputs are disabled.

I/O8 ~ I/O15 are used only in X16 organization device. Since command input and address input are x8 oper-

ation, I/O8 ~ I/O15 are not used to input command & address. I/O8 ~ I/O15 are used only for data input and

output.

CLE

COMMAND LATCH ENABLE

The CLE input controls the activating path for commands sent to the command register. When active high,

commands are latched into the command register through the I/O ports on the rising edge of the WE signal.

ALE

ADDRESS LATCH ENABLE

The ALE input controls the activating path for address to the internal address registers. Addresses are

latched on the rising edge of WE with ALE high.

CE

CHIP ENABLE

The CE input is the device selection control. When the device is in the Busy state, CE high is ignored, and

the device does not return to standby mode in program or erase operation. Regarding CE control during

read operation, refer to ’Page read’ section of Device operation .

RE

READ ENABLE

The RE input is the serial data-out control, and when active drives the data onto the I/O bus. Data is valid

tREA after the falling edge of RE which also increments the internal column address counter by one.

WE

WRITE ENABLE

The WE input controls writes to the I/O port. Commands, address and data are latched on the rising edge of

the WE pulse.

WP

WRITE PROTECT

The WP pin provides inadvertent write/erase protection during power tra nsitions. The internal high voltage

generator is reset when the WP pin is active low. When LOCKPRE is a logic high and WP is a logic low, the

all blocks go to lock state.

R/B

READY/BUSY OUTPUT

The R/B output indicates the status of the device operation. When low, it indicates that a program, erase or

random read operation is in process and returns to high state upon completion. It is an open drain output and

does not float to high-z condition when the chip is deselected or when outputs are disabled.

OUTPUT BUFFER POWER

Vcc

POWER

Vss

GROUND

N.C

NO CONNECTION

Lead is not internally connected.

DNU

DO NOT USE

Leave it disconnected

LOCKPRE

LOCK MECHANISM & POWER-ON AUTO-READ ENABLE

To Enable and disable the Lock mechanism and Power On Auto Read. When LOCKPRE is a logic high,

Block Lock mode and Power-On Auto-Read mode are enabled, and when LOCKPRE is a logic low, Block

Lock mode and Power-On Auto-Read mode are disabled. Power-On Auto-Read mode is available only on

3.3V device(K9K12XXU0C)

Not using LOCK MECHANISM & POWER-ON AUTO-READ, connect it Vss or leave it N.C