AT49LL080 Datasheet, PDF (1/31 Pages) ATMEL Corporation – 8-megabit Low-pin Count Flash Memory

Features
• Conforms to Intel LPC Interface Specification 1.0
• 8M Bits of Flash Memory for Platform Code/Data Storage
– Automated Byte-program and Sector-erase Operations
• Two Configurable Interfaces
– Low Pin Count (LPC) Interface for In-System Operation
– Address/Address Multiplexed (A/A Mux) Interface for Programming during
Manufacturing
• Low Pin Count Hardware Interface Mode
– 5-signal Communication Interface Supporting x8 Reads and Writes
– Read and Write Protection for Each Sector Using Software-controlled Registers
– Two Hardware Write-protect Pins: One for the Top Boot Sector, One for All Other
Sectors
– Five General-purpose Inputs, GPIs, for Platform Design Flexibility
– Operates with 33 MHz PCI Clock and 3.3V I/O
• Address/Address Multiplexed (A/A Mux) Interface
– 11-pin Multiplexed Address and 8-pin Data Interface
– Supports Fast On-board or Out-of-system Programming
• Power Supply Specifications
– V_CC: 3.3V ± 0.3V
– V_PP: 3.3V and 12V for Fast Programming
• Industry-standard Package
– 40-lead TSOP or 32-lead PLCC
8-megabit
Low-pin Count
Flash Memory
AT49LL080
Description
The AT49LL080 is a Flash memory device designed to interface with the LPC bus for
PC Applications. A feature of the AT49LL080 is the nonvolatile memory core. The
high-performance memory is arranged in sixteen sectors (see page 11).
The AT49LL080 supports two hardware interfaces: Low Pin Count (LPC) for in-system
operation and Address/Address Multiplexed (A/A Mux) for programming during manu-
facturing. The IC (Interface Configuration) pin of the device provides the control
between the interfaces. The interface mode needs to be selected prior to power-up or
before return from reset (RST or INIT low to high transition).
Pin Configuration
PLCC
[A7] GPI1 5
[A6] GPI0 6
[A5] WP 7
[A4] TBL 8
[A3] ID3 9
[A2] ID2 10
[A1] ID1 11
[A0] NC 12
[I/O0] LAD0 13
29 IC (V_IL) [IC(V_IH)]
28 CE [NC]
27 NC
26 NC
25 VCC [VCC]
24 INIT [OE]
23 LFRAME [WE]
22 RFU [RY/BY]
21 RFU [I/O7]
[ ] Designates A/A Mux Mode
TSOP, Type I
(NC) CE 1
[IC (VIH)] IC (VIL) 2
[NC] NC 3
[NC] NC 4
[NC] NC 5
[NC] NC 6
[A10] GPI4 7
[NC] NC 8
[R/C] CLK 9
[VCC] VCC 10
[VPP] VPP 11
[RST] RST 12
[NC] NC 13
[NC] NC 14
[A9] GPI3 15
[A8] GPI2 16
[A7] GPI1 17
[A6] GPI0 18
[A5] WP 19
[A4] TBL 20
40 GNDa [GNDa]
39 VCCa [VCCa]
38 LFRAME [WE]
37 INIT [OE]
36 RFU [RY/BY]
35 RFU [I/O7]
34 RFU [I/O6]
33 RFU [I/O5]
32 RFU [I/O4]
31 VCC [VCC]
30 GND [GND]
29 GND [GND]
28 LAD3 [I/O3]
27 LAD2 [I/O2]
26 LAD1 [I/O1]
25 LAD0 [I/O0]
24 NC [A0]
23 ID1 [A1]
22 ID2 [A2]
21 ID3 [A3]
[ ] Designates A/A Mux Mode
Rev. 3273C–FLASH–5/03
1