Application Note vs - Eon Silicon Solution Inc.

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