IA186EB/IA188EB
Data Sheet
8-Bit/16-Bit Microcontrollers
July 10, 2011
9.
Errata
The following errata are associated with Version 0 of the IA186EB/IA188EB. A workaround to
the identified problem has been provided where possible.
9.1
Summary
Table 25 presents a summary of errata.
Table 25. Summary of Errata
Errata No.
Problem
Ver. 0
Exists
Ver. 2
Fixed
Alternate Mode (TxCON[1] == 1) for timer 0 and 1 has some functional
issues.
1
2
3
When the extension byte (mod field) is set to ―11,‖ some instructions will
Exists
Exists
Fixed
Fixed
cause the CPU to hang.
When the chip is put in SFNM mode for INT0 or INT1, the LVL bit is
automatically set for those interrupts.
4
5
6
Timer 2 will stop or not start counting.
Exists
Exists
Exists
Fixed
Fixed
Fixed
Write does not occur when counter is actively counting.
Program Counter can become corrupted if an interrupt occurs.
Bound instruction uses bad data when index addresses are on odd
boundary in memory.
7
8
9
Exists
Exists
Exists
Fixed
Exists
Exists
Pin LOCK_n does not have an internal pullup and will float during reset
and bus hold.
The Relocation Register (RELREG, PCB offset 0xA8) can only be modified
by an 8-bit write.
When the timer compare register for any of the timers is set to x0000, the
max count is xFFFF instead of x10000 as in the OEM part.
10
11
Exists
-
Exists
Exists
NMI cannot bring chip out of powerdown mode.
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