MC68HC000RC10 Freescale Semiconductor, MC68HC000RC10 Datasheet - Page 106

• Manufacturer Part Number: MC68HC000RC10
• Description: IC MPU 32BIT 10MHZ 68-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC000RC10

• Processor Type: M680x0 32-Bit
• Speed: 10MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

SECTION 7
8-BIT INSTRUCTION EXECUTION TIMES
This section contains listings of the instruction execution times in terms of external clock
(CLK) periods for the MC68008 and MC68HC001/MC68EC000 in 8-bit mode. In this data,
it is assumed that both memory read and write cycles consist of four clock periods. A
longer memory cycle causes the generation of wait states that must be added to the total
instruction times.
The number of bus read and write cycles for each instruction is also included with the
timing data. This data is shown as
where:
For example, a timing number shown as 18(3/1) means that 18 clock periods are required
to execute the instruction. Of the 18 clock periods, 12 are used for the three read cycles
(four periods per cycle). Four additional clock periods are used for the single write cycle,
for a total of 16 clock periods. The bus is idle for two clock periods during which the
processor completes the internal operations required for the instruction.
7.1 OPERAND EFFECTIVE ADDRESS CALCULATION TIMES
Table 7-1 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.
MOTOROLA
n is the total number of clock periods
r is the number of read cycles
w is the number of write cycles
The total number of clock periods (n) includes instruction fetch
and all applicable operand fetches and stores.
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
NOTE
n(r/w)
7- 1