UPSD3212A(2009) Ver la hoja de datos (PDF) - STMicroelectronics

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UPSD3212A
(Rev.:2009)

Flash programmable system devices with 8032 MCU and USB and programmable logic

STMicroelectronics 

Architecture overview

Table 12.

Boolean instructions

Mnemonic

ANL C,bit

ANL C,/bit

ORL C,bit

ORL C,/bit

MOV C,bit

MOV bit,C

CLR C

CLR bit

SETB C

SETB bit

CPL C

CPL bit

JC rel

JNC rel

JB bit,rel

JNB bit,rel

JBC bit,rel

UPSD3212A, UPSD3212C, UPSD3212CV

Operation

C = A .AND. bit

C = C .AND. .NOT. bit

C = A .OR. bit

C = C .OR. .NOT. bit

C = bit

bit = C

C=0

bit = 0

C=1

bit = 1

C = .NOT. C

bit = .NOT. bit

Jump if C =1

Jump if C = 0

Jump if bit =1

Jump if bit = 0

Jump if bit = 1; CLR bit

2.13

Relative offset

The destination address for these jumps is specified to the assembler by a label or by an

actual address in Program memory. However, the destination address assembles to a

relative offset byte. This is a signed (two’s complement) offset byte which is added to the PC

in two’s complement arithmetic if the jump is executed.

The range of the jump is therefore -128 to +127 Program Memory bytes relative to the first

byte following the instruction.

2.14

Jump instructions

Table 13 shows the list of unconditional jump instructions. The table lists a single “JMP add”

instruction, but in fact there are three SJMP, LJMP, and AJMP, which differ in the format of

the destination address. JMP is a generic mnemonic which can be used if the programmer

does not care which way the jump is en-coded.

The SJMP instruction encodes the destination address as a relative offset, as described

above. The instruction is 2 bytes long, consisting of the opcode and the relative offset byte.

The jump distance is limited to a range of -128 to +127 bytes relative to the instruction

following the SJMP.

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