Description

The SST49LF004B-33-4C-NH is an electronic component belonging to the IC Chips category. It is a flash memory device designed to interface with host controllers (chipsets) that support a low pin-count (LPC) interface for BIOS applications. The SST49LF004B-33-4C-NH complies with Intel's LPC Interface Specification 1.1 and supports single-byte Firmware Memory and LPC Memory cycle types. It is backward compatible with the SST49LF00xA Firmware Hub and the SST49LF0x0A LPC Flash.

Specifications and features

• Memory Array: 512K x8 (4 Mbit)
• Conforms to Intel LPC Interface Specification 1.1
• Erase Capability: Uniform 4 KByte sectors, Uniform 16 KByte overlay blocks for SST49LF002B, Uniform 64 KByte overlay blocks for SST49LF003B/004B
• Read and Write Operations: Single 3.0-3.6V
• Reliability: Endurance - 100,000 Cycles (typical), Data Retention - Greater than 100 years
• Power Consumption: Active Read Current - 6 mA (typical), Standby Current - 10 µA (typical)
• Erase/Program Operation Times: Sector-Erase Time - 18 ms (typical), Block-Erase Time - 18 ms (typical), Chip-Erase Time - 70 ms (typical), Byte-Program Time - 14 µs (typical), Chip Rewrite Time - SST49LF002B: 4 seconds (typical), SST49LF003B: 6 seconds (typical), SST49LF004B: 8 seconds (typical)
• Operational Modes: Low Pin Count (LPC) interface mode for in-system operation, Parallel Programming (PP) mode for fast production programming
• LPC Interface Mode: LPC bus interface supporting byte Read and Write, 33 MHz clock frequency operation, WP# and TBL# pins provide hardware write protect for entire chip and/or top Boot Block, Block Locking Registers for individual block Write-Lock and Lock-Down protection, JEDEC Standard SDP Command Set, Data# Polling and ToggleBit for End-of-Write detection, 5 GPI pins for system design flexibility, 4 ID pins for multi-chip selection
• Parallel Programming (PP) Mode: 11-pin multiplexed address and 8-pin data I/O interface, Supports fast In-System or PROM programming for manufacturing
• CMOS and PCI I/O Compatibility
• Packages Available: 32-lead PLCC for all devices, 40-lead TSOP (10mm x 20mm) for SST49LF004B
• All non-Pb (lead-free) devices are RoHS compliant

Application Scenarios

The SST49LF004B-33-4C-NH is used in systems that require flash memory storage for code/data. It is commonly used in applications such as BIOS for interfacing with host controllers, in-system operations, and fast production programming.

Comparison

• Compliance with Intel's LPC Interface Specification 1.1
• Flexible erase capability
• Superior reliability with endurance of 100,000 cycles (typical) and data retention of greater than 100 years
• Low power consumption
• Fast sector-erase/byte-program operation
• Support for two operational modes: LPC interface mode and Parallel Programming (PP) mode
• Compatibility with CMOS and PCI I/O
• Availability of different packages
• RoHS compliant

• Requires host controllers that support a low pin-count (LPC) interface
• Limited memory sizes available (2 Mbit, 3 Mbit, and 4 Mbit)
• Programming and erase times may vary based on the specific model