Eon Silicon Solution Inc. Application Note Eon Flash EN29LV640B(T) vs SST Flash SST39VF6401(2)B This Application Note may be revised by subsequent versions or modifications due to changes in technical specifications. 1 Rev. A, Issue Date: 2009/09/09 ©2005 Eon Silicon Solution Inc. www.eonssi.com Eon Silicon Solution Inc. 1. INTRODUCTION The application note introduces how to implement a system design from SST SST39VF6401(2)B Flash to Eon EN29LV640B(T) Flash. 2. GENERAL FUNCTION COMPARISON TABLE: The following table highlights the major features of these two devices. Features voltage range Pin to Pin Access time Sector Architecture Byte/Word mode VID and VHH Max Autoselect Command WP#/ACC RY/BY# CFI Compliant JEDEC Data# polling & toggle bit command Erase Suspend / Resume Query Sec ID User Security ID Word-Program User Security ID Program Lock-Out Software ID Entry EN29LV640B(T) 2.7 ~ 3.6 Pin 14 = WP#/ACC, Pin 15 = RY/BY#, Pin 45 = DQ15/A-1 70ns @ (3.0V~3.6V) 90ns 8 x 8K Byte boot sectors + 127 x 64K Byte sector Yes SST39VF6401(2)B 2.7 ~ 3.6 Pin 14 = WP#, Pin 15 = NC, Pin 45 = DQ15 70ns 90ns Uniform 2 KWord sectors Uniform 32 KWord blocks Only support Word mode 10.5V – 11.5V No Yes Yes Yes Yes No only support WP# No Yes Yes Yes Yes Yes No Yes No Yes No Yes No Yes No Yes 100K 100K 48-pin 12mm x 20mm TSOP 48-pin 12mm x 20mm TSOP Software ID Exit Minimum endurance cycle Package This Application Note may be revised by subsequent versions or modifications due to changes in technical specifications. 2 Rev. A, Issue Date: 2009/09/09 ©2005 Eon Silicon Solution Inc. www.eonssi.com Eon Silicon Solution Inc. 3. HARDWARE & PERFORMANCE CONSIDERATIONS 3.1 ICC comparison SST39VF6401(2)B EN29LV640B(T) Current Typ Read ICC1 (@ 5 MHz) Unit Max Typ Max 9 16 - 18 mA Write ICC2 20 30 - 35 mA Standby ICC3 1 5 - 20 μA 3.2 Boot Sector Architecture comparison Boot Sector Bottom boot Top boot Eon EN29LV640B EN29LV640T SST SST39VF6401B SST39VF6402B 3.3 48-pin TSOP (Type 1) package comparison Part No. Pin 14 Pin 15 Pin 45 SST39VF6401(02)-70(90)-4I(C)-EKE WP# NC DQ15 EN29LV640B(T)-90TIP WP#/ACC RY/BY# DQ15/A-1 3.4 Ready/Busy# pin (RY/BY#): Provides a hardware method of detecting program or erase cycle completion EN29LV640B(T): Yes SST39VF6401(2)B: No 3.5 Max VID comparison EN29LV640B(T) : VID range is 10.5V ~ 11.5V. SST39VF6401(2)B : doesn’t support VID function. Any voltage level higher than chip spec would damage the device, possibly. This Application Note may be revised by subsequent versions or modifications due to changes in technical specifications. 3 Rev. A, Issue Date: 2009/09/09 ©2005 Eon Silicon Solution Inc. www.eonssi.com Eon Silicon Solution Inc. 3.6 Temporary sector unprotect: This mode allows users to use specific programmer equipment to do programming function. EN29LV640B(T) : Yes SST39VF6401(2)B: No 3.7 Different VLKO range (for write inhibit condition) EN29LV640B(T) : 2.3V ~ 2.5V SST39VF6401(2)B: <1.5V 4. SOFTWARE CONSIDERATIONS 4.1 Manufacturer ID, Device Identifications comparison Eon SST Manufacture ID: 007Fh (A8 = “0”), 001Ch (A8 = “1”). Manufacture ID: 00BFh Part No. Device ID Part No. Device ID EN29LV640B (Bottom boot) 22CBh SST39VF6401B (Bottom boot) 236Dh EN29LV640T (Top boot) 22C9h SST39VF6402B (Top boot) 236Ch 4.2 Flexible Sector Architecture: EN29LV640B(T): - Eight 8-Kbyte sectors, One hundred and twenty-seven 32K-Word / 64K-byte sectors. - 8-Kbyte sectors for Top or Bottom boot. SST39VF6401(2): - Uniform 4K KWord sectors. - Uniform 32 KWord blocks The sector (block) size of SST parts is different from Eon parts. Software can be configured to fit both. This Application Note may be revised by subsequent versions or modifications due to changes in technical specifications. 4 Rev. A, Issue Date: 2009/09/09 ©2005 Eon Silicon Solution Inc. www.eonssi.com Eon Silicon Solution Inc. Revisions List Revision No Description Date A 2009/09/09 Initial Release This Application Note may be revised by subsequent versions or modifications due to changes in technical specifications. 5 Rev. A, Issue Date: 2009/09/09 ©2005 Eon Silicon Solution Inc. www.eonssi.com