AT45D161 Datasheet, PDF (1/20 Pages) ATMEL Corporation – 16-Megabit 5-volt Only Serial DataFlash

Features
• Single 4.5V - 5.5V Supply
• Serial Interface Architecture
• Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 4096 Pages (528 Bytes/Page) Main Memory
• Optional Page and Block Erase Operations
• Two 528-Byte SRAM Data Buffers – Allows Receiving of Data while Reprogramming of
Nonvolatile Memory
• Internal Program and Control Timer
• Fast Page Program Time – 7 ms Typical
• 120 µs Typical Page to Buffer Transfer Time
• Low Power Dissipation
– 15 mA Active Read Current Typical
– 10 µA CMOS Standby Current Typical
• 15 MHz Max Clock Frequency
• Hardware Data Protection Feature
• Serial Peripheral Interface (SPI) Compatible – Modes 0 and 3
• CMOS and TTL Compatible Inputs and Outputs
• Commercial and Industrial Temperature Ranges
Description
The AT45D161 is a 5-volt only, serial interface Flash memory suitable for in-system
reprogramming. Its 17,301,504 bits of memory are organized as 4096 pages of 528
bytes each. In addition to the main memory, the AT45D161 also contains two SRAM
data buffers of 528 bytes each. The buffers allow receiving of data while a page in the
main memory is being reprogrammed. Unlike conventional Flash memories that are
Pin Configurations
(continued)
Pin Name Function
SOIC
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page
Write Protect Pin
Chip Reset
Ready/Busy
GND
1
NC
2
NC
3
CS
4
SCK
5
SI
6
SO
7
NC
8
NC
9
NC
10
NC
11
NC
12
NC
13
NC
14
28
VCC
27
NC
26
NC
25
WP
24
RESET
23
RDY/BUSY
22
NC
21
NC
20
NC
19
NC
18
NC
17
NC
16
NC
15
NC
PLCC
SCK 5
SI 6
SO 7
NC 8
NC 9
NC 10
NC 11
NC 12
NC 13
29 WP
28 RESET
27 RDY/BUSY
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
Note: PLCC package pins 16
and 17 are DON’T CONNECT
RDY/BUSY 1
RESET 2
WP 3
NC 4
NC 5
VCC 6
GND 7
NC 8
NC 9
NC 10
CS 11
SCK 12
SI 13
SO 14
TSOP Top View
Type 1
28 NC
27 NC
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
20 NC
19 NC
18 NC
17 NC
16 NC
15 NC
16-Megabit
5-volt Only
Serial
DataFlash^™
AT45D161
Preliminary
AT45DB161
Preliminary 16-
Megabit 2.7-volt
Only Serial
DataFlash
Rev. 1081A–06/98
1