AT52SC1283J datasheet(3/52 Pages) ATMEL

3 / 52 page

3530B–STKD–2/4/05

AT52SC1283J/1284J [Preliminary]

Pin Configurations

Pin Name

Function

A0 - A22

Addresses

I/O0 - I/O15

Data Inputs/Outputs

Flash Chip Enable

Flash Output Enable

Flash Write Enable

AVD

Flash Address Latch Enable

CLK

Flash Clock

RST

Flash Reset

Flash Write Protect

VPP

Flash Write Protection and Power Supply for

Accelerated Program Operation

WAIT

Flash WAIT

VCC

Flash Power Supply

PCS1

PSRAM Chip Select

PSRAM Deep Power-down

VCCQ

Output Power Supply

PLB

PSRAM Lower Byte Control

PUB

PSRAM Upper Byte Control

POE

PSRAM Output Enable

PWE

PSRAM Write Enable

PVCC

PSRAM Power Supply

No Connect

VSS

Device Ground (Common)

3.1

88-ball CBGA Top View

2345678

POE

CE1

VSS

A18

PLB

A17

I/O8

I/O0

OE1

VSS

A19

PUB

I/O2

I/O1

I/O9

VCCQ

VSS

VPP

RST

I/O10

I/O3

I/O11

VCC

PWE

AVD

I/O5

I/O12

I/O4

PVCC

VSS

CLK

PCS1

A20

I/O13

I/O14

I/O6

VSS

A21

A22

A10

A14

WAIT

I/O7

I/O15

VCCQ

VSS

A11

A12

A13

A15

A16

VCCQ

VSS

Flash Only

PSRAM Only

Common

Absolute Maximum Ratings

Temperature under Bias ...................................-25

°C to +85°C

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect device

reliability.

Storage Temperature ......................................-55

°C to +150°C

All Input Voltages except V

PP (including NC Pins)

with Respect to Ground ............................. -0.2V to V

CC + 0.3V

Voltage on V

with Respect to Ground ..................................-0.2V to + 10.0V

All Output Voltages

with Respect to Ground ............................. -0.2V to V

CC + 0.3V

DC and AC Operating Range

Operating Temperature (Case)

-25

°C to 85°C

VCC Power Supply

1.7V to 1.95V

CCQ, PVCC

1.8V to 1.95V

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