64WQ datasheet(15/46 Pages) NUMONYX

15 / 46 page

November 2007

Datasheet

Order Number: 251407-13

32WQ and 64WQ Family with Asynchronous RAM

R-UB#

R-LB#

Input

RAM UPPER/ LOWER BYTE ENABLES: Low-true; During RAM reads, R-UB#-low enables the RAM

high-order bytes on D[15:8], and R-LB#-low enables the RAM low-order bytes on D[7:0].

R-UB# and R-LB# are only available on SCSP combinations with either SRAM die or PSRAM die.

F-WE#

Input

FLASH WRITE ENABLE: Low-true; WE# controls writes to the selected flash die. Address and data

are latched on the rising edge of WE#.

R-WE#

Input

RAM WRITE ENABLE: Low-true; R-WE# controls writes to the RAM die.

R-WE# is only available on SCSP combinations with RAM die.

F-WP#

Input

FLASH WRITE PROTECT: Low-true; WP# enables/disables the lock-down protection mechanism of

the flash die. WP#-low enables the lock-down mechanism- locked down blocks cannot be unlocked

with software commands. WP#-high disables the lock-down mechanism, allowing locked down blocks

to be unlocked with software commands.

F-RST#

Input

FLASH RESET: Low-true; RST#-low initializes flash internal circuitry and disables flash operations.

RST#-high enables flash operation. Exit from reset places the flash in asynchronous read array mode.

F-VPP

F-VPEN

Power

FLASH PROGRAM/ ERASE POWER: A valid F-VPP voltage on this ball enables flash program/erase

operations. Flash memory array contents cannot be altered when F-VPP(VPEN) < VPPLK(VPENLK). Erase/

program operations at invalid F-VPP(VPEN) voltages should not be attempted. Refer to the flash

discrete product datasheet for additional details.

F-VPEN (Erase/Program/Block Lock Enables) is not available for W18/W30 products.

P-MODE

Input

PSRAM MODE: Low-true; P-MODE is used to enter/exit low power mode.

Low power mode is not applicable to 38F2020W0ZTQ1, 38F2020W0ZBQ1, 38F2030W0YTQ1,

38F2030W0YBQ1, 38F2030W0ZTQ2, 38F2030W0ZBQ2, 38F1030W0ZTQ0, 38F1030W0ZBQ0.

P-Mode is only available on SCSP combinations with PSRAM die.

F[2:1]-VCC

Power

FLASH LOGIC POWER: F1-VCC supplies power to the core logic of flash die #1; F2-VCC supplies

power to the core logic of flash die #2 and #3. Write operations are inhibited when F-VCC < VLKO.

Device operations at invalid F-VCC voltages should not be attempted.

F2-VCC is only available on SCSP combinations with two or three flash die, and is RFU on SCSP

combinations with only one flash die.

S-VCC

Power

SRAM Power Supply: Supplies power to the SRAM die.

S-VCC is only available on SCSP combinations with SRAM die.

P-VCC

Power

PSRAM Power Supply: Supplies power to the PSRAM die.

P-VCC is only available on SCSP combinations with PSRAM die.

VCCQ

Power

FLASH OUTPUT-BUFFER POWER: Supplies power for the I/O output buffers.

VSS

Power

Ground: Connect to ground. Do not float any VSS connection.

RFU

—

Reserved for Future Use: Reserve for future device functionality/ enhancements.

—

Don’t Use: Do not connect to any other signal, or power supply; must be left floating.

Table 3:

Signal Descriptions (Sheet 2 of 2)

Symbol

Type

Name and Function

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