AT49BV322A-70TI datasheet, PDF

Datasheet> All Categories > storage> AT49BV322A-70TI

AT49BV322A-70TI: DescriptionIC FLASH 32M PARALLEL 48TSOP; Categorystorage; File Size488KB，32 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com

Download Datasheet Parametric View All

AT49BV322A-70TI Online Shopping

Suppliers	Part Number	Price	MOQ	In stock
	AT49BV322A-70TI	-	-	View	Buy Now

AT49BV322A-70TI Overview

IC FLASH 32M PARALLEL 48TSOP

AT49BV322A-70TI Parametric

Parameter Name	Attribute value
memory type	non-volatile
memory format	flash memory
technology	FLASH
storage	32Mb （4M x 8，2M x 16）
Write cycle time - words, pages	200µs
interview time	70ns
memory interface	in parallel
Voltage - Power	2.65 V ~ 3.6 V
Operating temperature	-40°C ~ 85°C（TC）
Installation type	surface mount
Package/casing	48-TFSOP (0.724", 18.40mm wide)
Supplier device packaging	48-TSOP

Preview

Download Datasheet

View All

Features

•

Single Voltage Read/Write Operation: 2.65V to 3.6V

•

Access Time – 70 ns

•

Sector Erase Architecture

– Sixty-three 32K Word (64K Bytes) Sectors with Individual Write Lockout

– Eight 4K Word (8K Bytes) Sectors with Individual Write Lockout

Fast Word Program Time – 12 µs

Fast Sector Erase Time – 300 ms

Suspend/Resume Feature for Erase and Program

– Supports Reading and Programming from Any Sector by Suspending Erase

of a Different Sector

– Supports Reading Any Byte/Word in the Non-suspending Sectors by Suspending

Programming of Any Other Byte/Word

Low-power Operation

– 12 mA Active

– 13 µA Standby

Data Polling, Toggle Bit, Ready/Busy for End of Program Detection

VPP Pin for Write Protection

RESET Input for Device Initialization

Sector Lockdown Support

TSOP and CBGA Package Options

Top or Bottom Boot Block Configuration Available

128-bit Protection Register

Minimum 100,000 Erase Cycles

Common Flash Interface (CFI)

Green (Pb/Halide-free) Packaging Option

•

32-megabit

(2M x 16/4M x 8)

3-volt Only

Flash Memory

AT49BV322A

AT49BV322AT

•

1. Description

The AT49BV322A(T) is a 2.7-volt 32-megabit Flash memory organized as 2,097,152

words of 16 bits each or 4,194,304 bytes of 8 bits each. The x16 data appears on

I/O0 - I/O15; the x8 data appears on I/O0 - I/O7. The memory is divided into 71 sec-

tors for erase operations. The device is offered in a 48-lead TSOP and a 48-ball

CBGA package. The device has CE and OE control signals to avoid any bus conten-

tion. This device can be read or reprogrammed using a single power supply, making it

ideally suited for in-system programming.

The device powers on in the read mode. Command sequences are used to place the

device in other operation modes such as program and erase. The device has the

capability to protect the data in any sector (see

“Sector Lockdown” on page 7).

To increase the flexibility of the device, it contains an Erase Suspend and Program

Suspend feature. This feature will put the erase or program on hold for any amount of

time and let the user read data from or program data to any of the remaining sectors

within the memory. The end of a program or an erase cycle is detected by the

READY/BUSY pin, Data Polling or by the toggle bit.

3308J–FLASH–4/05

AT49BV322A(T)

microprocessor write timings are used. The address locations used in the command sequences

are not affected by entering the command sequences.

4.3

Reset

A RESET input pin is provided to ease some system applications. When RESET is at a logic

high level, the device is in its standard operating mode. A low level on the RESET input halts the

present device operation and puts the outputs of the device in a high impedance state. When a

high level is reasserted on the RESET pin, the device returns to the read or standby mode,

depending upon the state of the control inputs.

4.4

Erasure

Before a byte/word can be reprogrammed, it must be erased. The erased state of memory bits is

a logical “1”. The entire device can be erased by using the Chip Erase command or individual

sectors can be erased by using the Sector Erase command.

4.4.1

Chip Erase

The entire device can be erased at one time by using the six-byte chip erase software code.

After the chip erase has been initiated, the device will internally time the erase operation so that

no external clocks are required. The maximum time to erase the chip is t

If the sector lockdown has been enabled, the chip erase will not erase the data in the sector that

has been locked out; it will erase only the unprotected sectors. After the chip erase, the device

will return to the read or standby mode.

4.4.2

Sector Erase

As an alternative to a full chip erase, the device is organized into 71 sectors (SA0 - SA70) that

can be individually erased. The Sector Erase command is a six-bus cycle operation. The sector

address is latched on the falling WE edge of the sixth cycle while the 30H data input command is

latched on the rising edge of WE. The sector erase starts after the rising edge of WE of the sixth

cycle. The erase operation is internally controlled; it will automatically time to completion. The

maximum time to erase a sector is t

SEC

. When the sector programming lockdown feature is not

enabled, the sector will erase (from the same Sector Erase command). An attempt to erase a

sector that has been protected will result in the operation terminating immediately.

4.5

Byte/Word Programming

Once a memory block is erased, it is programmed (to a logical “0”) on a byte-by-byte or on a

word-by-word basis. Programming is accomplished via the internal device command register

and is a four-bus cycle operation. The device will automatically generate the required internal

program pulses.

Any commands written to the chip during the embedded programming cycle will be ignored. If a

hardware reset happens during programming, the data at the location being programmed will be

corrupted. Please note that a data “0” cannot be programmed back to a “1”; only erase opera-

tions can convert “0”s to “1”s. Programming is completed after the specified t

cycle time. The

Data Polling feature or the Toggle Bit feature may be used to indicate the end of a program

cycle. If the erase/program status bit is a “1”, the device was not able to verify that the erase or

program operation was performed successfully.

3308J–FLASH–4/05

Recommended Resources

CD4098 pulse delay and stretching circuit

Huanghe brand BCD-170 refrigerator circuit

Use a wire to transmit communication signals

MP3 circuit diagram high definition 4

Low noise audio preamplifier circuit

DMAl0 rectifier module function diagram

Python for Data Analysis: [hide]https://wesmckinney.com/book/preface.html[/hide]...; dcexpert MicroPython Open Source section

A super electronic capacitor to replace the farad capacitor: The equivalent capacity can reach tens of thousands of farads. When connected in parallel at both ends of an aging car battery, starting the car in winter is no longer difficult! Happy...; PowerAnts Talking

Please help me. How to convert .brd file to Altium file: I need help from all the masters in the forum. I have a .brd file, but I can't convert it into AD17. I have no choice but to ask for help from the masters. How should I convert it? Please teach me. Th...; 子成0105 PCB Design

DC-DC chips have current control mode and voltage control mode? How to understand?: DC-DC chips have current control mode and voltage control mode? How to understand? Question 1: Is the voltage control mode understood as constant voltage control? Is the current control mode understoo...; 小太阳yy Switching Power Supply Study Group

The tax control cash register won the "first prize in China": The "first bid in the country" for tax　　-control cash registers was issued recently in Guangdong Province, and five companies won the bid. On February 15, the Guangdong Provincial Government Procureme...; dgj Embedded System

The permanent magnet synchronous motor keeps vibrating and turning back and forth: I need help: After the synchronous motor is powered on, the rotor keeps rotating 8 or 9 degrees forward, and then 8 or 9 degrees reversely, and keeps doing this cycle. The interval seems to be between...; heiheihaha Motor Drive Control（Motor Control）

Shortcut: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN EO EP EQ ER ES ET EU EV EW EX EY EZ F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF FG FH FI FJ FK FL FM FN FO FP FQ FR FS FT FU FV FW FX FY FZ G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GZ H0 H1 H2 H3 H4 H5 H6 H7 H8 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ I1 I2 I3 I4 I5 I6 I7 IA IB IC ID IE IF IG IH II IK IL IM IN IO IP IQ IR IS IT IU IV IW IX J0 J1 J2 J6 J7 JA JB JC JD JE JF JG JH JJ JK JL JM JN JP JQ JR JS JT JV JW JX JZ K0 K1 K2 K3 K4 K5 K6 K7 K8 K9 KA KB KC KD KE KF KG KH KI KJ KK KL KM KN KO KP KQ KR KS KT KU KV KW KX KY KZ

Popular Components