MC68HC000EI20 Freescale Semiconductor, MC68HC000EI20 Datasheet - Page 129

• Manufacturer Part Number: MC68HC000EI20
• Description: IC MPU 16BIT 20MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC000EI20

• 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: -

9.1 OPERAND EFFECTIVE ADDRESS CALCULATION TIMES
Table 9-1 lists the numbers of clock periods required to compute the effective addresses
for instructions. The totals include fetching any extension words, computing the address,
and fetching the memory operand. The total number of clock periods, the number of read
cycles, and the number of write cycles (zero for all effective address calculations) are
shown in the previously described format.
*The size of the index register (Xn) does not affect execution time.
9.2 MOVE INSTRUCTION EXECUTION TIMES
Tables 9-2, 9-3, 9-4, and 9-5 list the numbers of clock periods for the move instructions.
The totals include instruction fetch, operand reads, and operand writes. The total number
of clock periods, the number of read cycles, and the number of write cycles are shown in
the previously described format.
9-2
Dn
An
(An)
(An)+
–(An)
(d 16 , An)
(d 8 , An, Xn)*
(xxx).W
(xxx).L
(d 16 , PC)
(d 8 , PC, Xn)*
#<data>
Data Register Direct
Address Register Direct
Address Register Indirect
Address Register Indirect with Postincrement
Address Register Indirect with Predecrement
Address Register Indirect with Displacement
Address Register Indirect with Index
Absolute Short
Absolute Long
Program Counter Indirect with Displacement
Program Counter Indirect with Index
Immediate
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
Addressing Mode
Table 9-1. Effective Address Calculation Times
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10(2/0)
12(3/0)
10(2/0)
Fetch
0(0/0)
0(0/0)
4(1/0)
4(1/0)
6(1/0)
8(2/0)
8(2/0)
8(2/0)
4(1/0)
Byte, Word
No Fetch
2(0/0)
4(0/0)
4(0/0)
4(0/0)
8(1/0)
4(1/0)
8(2/0)
—
—
—
—
—
10(2/0)
12(3/0)
14(3/0)
12(3/0)
16(4/0)
12(3/0)
14(3/0)
Fetch
0(0/0)
0(0/0)
8(2/0)
8(2/0)
8(2/0)
Long
MOTOROLA
No Fetch
2(0/0)
4(0/0)
4(0/0)
4(1/0)
8(1/0)
4(1/0)
8(2/0)
—
—
—
—
—