MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 126

• 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: -

Integer Instructions
ASL, ASR
Condition Codes:
Instruction Format:
Instruction Fields:
4-22
15
1
Count/Register field—Specifies shift count or register that contains the shift count:
For ASR, the operand is shifted right; the number of positions shifted is the shift count.
Bits shifted out of the low-order bit go to both the carry and the extend bits; the sign bit
(MSB) is shifted into the high-order bit.
X — Set according to the last bit shifted out of the operand; unaffected for a shift
N — Set if the most significant bit of the result is set; cleared otherwise.
Z — Set if the result is zero; cleared otherwise.
V — Set if the most significant bit is changed at any time during the shift operation;
C — Set according to the last bit shifted out of the operand; cleared for a shift count
If i/r = 1, this field specifies the data register that contains the shift count (modulo 64).
If i/r = 0, this field contains the shift count. The values 1 – 7 represent counts of 1 –
14
1
X
*
ASR:
count of zero.
cleared otherwise.
of zero.
7; a value of zero represents a count of eight.
13
1
N
*
12
0
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Z
*
11
V
*
REGISTER
COUNT?
10
C
*
MSB
Arithmetic Shift
9
(M68000 Family)
REGISTER SHIFTS
dr
8
OPERAND
7
SIZE
6
i/r
5
4
0
ASL, ASR
3
0
2
C
X
REGISTER
MOTOROLA
1
0