MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 165
MC68EC000EI20
Manufacturer Part Number
MC68EC000EI20
Description
IC MPU 32BIT 20MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Specifications of MC68EC000EI20
Processor Type
M680x0 32-Bit
Speed
20MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
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BTST
Operation:
Assembler
Syntax:
Attributes:
Description: Tests a bit in the destination operand and sets the Z condition code
Condition Codes:
MOTOROLA
appropriately. When a data register is the destination, any of the 32 bits can be
specified by a modulo 32- bit number. When a memory location is the destination, the
operation is a byte operation, and the bit number is modulo 8. In all cases, bit zero
refers to the least significant bit. The bit number for this operation can be specified in
either of two ways:
X — Not affected.
N — Not affected.
Z — Set if the bit tested is zero; cleared otherwise.
V — Not affected.
C — Not affected.
1. Immediate—The bit number is specified in a second word of the instruction.
2. Register—The specified data register contains the bit number.
—
X
—
N
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
TEST ( < bit number > of Destination)
BTST Dn, < ea >
BTST # < data > , < ea >
Size = (Byte, Long)
Z
—
V
—
C
(M68000 Family)
Test a Bit
Z
Integer Instructions
BTST
4-61
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