AT49BV320D-70TU Atmel, AT49BV320D-70TU Datasheet - Page 3

• Manufacturer Part Number: AT49BV320D-70TU
• Description: IC FLASH 32MBIT 70NS 48TSOP
• Manufacturer: Atmel

Specifications of AT49BV320D-70TU

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 32M (2M x 16)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 2.65 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TSOP
• Capacitance, Input: 4 pF
• Capacitance, Output: 8 pF
• Current, Input, Leakage: 2 μA
• Current, Output, Leakage: 2
• Density: 32M
• Organization: 2M×16
• Package Type: TSOP
• Temperature, Operating: -40 to +85 °C
• Time, Access: 70 ns
• Time, Address Setup: 20
• Voltage, Input, Low: 0.6 V
• Voltage, Output, Low: 0.45 V
• Voltage, Supply: 2.65 to 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3. Block Diagram
4. Device Operation
4.1
4.2
3581D–FLASH–2/06
A0 - A20
Command Sequences
Read
Y-DECODER
X-DECODER
ADDRESS
BUFFER
LATCH
INPUT
When the device is first powered on, it will be in the read mode. In order to perform other device
functions, a series of command sequences are entered into the device. The command
sequences are shown in the
inputs for the command codes). The command sequences are written by applying a low pulse
on the WE or CE input with CE or WE low (respectively) and OE high. The address and data are
latched by the first rising edge of CE or WE. Standard microprocessor write timings are used.
The address locations used in the command sequences are not affected by entering the com-
mand sequences.
When the AT49BV320D(T) is in the read mode, with CE and OE low and WE high, the data
stored at the memory location determined by the address pins are asserted on the outputs. The
OUTPUT
BUFFER
COMPARATOR
MEMORY
IDENTIFIER
I/O0 - I/O15
REGISTER
REGISTER
Y-GATING
STATUS
MAIN
DATA
“Command Definition Table” on page 15
BUFFER
INPUT
WRITE STATE
COMMAND
REGISTER
MACHINE
PROGRAM/ERASE
VOLTAGE SWITCH
AT49BV320D(T)
(I/O8 - I/O15 are don’t care
CE
WE
OE
RESET
WP
VPP
VCC
GND
3