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N80L186EB16

8-Bit/16-Bit Microcontrollers

InnovASIC, Inc 

IA186EB/IA188EB

8-Bit/16-Bit Microcontrollers

Data Sheet

July 10, 2011

Errata No. 2

Problem: When the extension byte (mod field) is set to ―11,‖ some instructions will cause the

CPU to hang.

Description: Although there are faster versions of each instruction (these are not commonly

used by compilers), the following instructions will cause the CPU to hang when the extension

byte (mod field) is set to ―11‖:

8D (LEA)

8F (POP memory)

C6 (MOV immediate8 to memory/register)

C7 (MOV immediate16 to memory/register)

FE (PUSH memory)

FF (PUSH memory)

Workaround: Substitute instructions in the following table.

Instruction

8D (LEA)

8F (POP memory)

C6 (MOV immediate8 to memory/register)

C7 (MOV immediate16 to memory/register)

FE (PUSH memory)

FF (PUSH memory)

Workaround

Use MOV register (89 or 8B)

Use POP register (0101_0xxx)

Use MOV immediate8 to register (1011_0xxx)

Use MOV immediate16 to register (1011_1xxx)

Use PUSH register (0101_0xxx)

Use PUSH register (0101_0xxx)

Errata No. 3

Problem: When the chip is put in SFNM mode for INT0 or INT1, the LVL bit is automatically

set for those interrupts.

Workaround: None.

IA211080314-13

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