User guide

2
AT89C5132
4253A–USB–08/03
Active USB Bootloader Errata List
• No Active Errata
USB Bootloader Errata History
USB Bootloader Errata Description
1. Boot Process - Marginal SBV Value
When Bootloader is called from user’s application with SBV = F0h, the bootloader is never executed and execution
enters an infinite loop.
Workaround
Always set SBV value to FFh instead of F0h.
Version Number Errata List
V1.6.0 1
V1.6.2 None