MC68HC000EI8R2 Freescale Semiconductor, MC68HC000EI8R2 Datasheet - Page 51

• Manufacturer Part Number: MC68HC000EI8R2
• Description: IC MPU 16BIT 8MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC000EI8R2

• Processor Type: M680x0 32-Bit
• Speed: 8MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

The word and byte write-cycle timing diagram and flowcharts in Figures 5-5, 5-6, and 5-7
applies directly to the MC68000, the MC68HC000, the MC68HC001 (in 16-bit mode), the
MC68EC000 (in 16-bit mode), and the MC68010.
MOTOROLA
1) PLACE FUNCTION CODE ON FC2–FC0
2) PLACE ADDRESS ON A23–A1
3) ASSERT ADDRESS STROBE (AS)
4) SET R/W TO WRITE
5) PLACE DATA ON D15–D0
6) ASSERT UPPER DATA STROBE (UDS)
1) PLACE FUNCTION CODE ON FC2–FC0
2) PLACE ADDRESS ON A23–A1
3) ASSERT ADDRESS STROBE (AS)
4) SET R/W TO WRITE
5) PLACE DATA ON D0–D7 OR D15–D8
6) ASSERT UPPER DATA STROBE (UDS)
1) NEGATE UDS AND LDS
2) NEGATE AS
3) REMOVE DATA FROM D7-D0 OR
4) SET R/W TO READ
1) NEGATE UDS AND LDS
2) NEGATE AS
3) REMOVE DATA FROM D15–D0
4) SET R/W TO READ
AND LOWER DATA STROBE (LDS)
(ACCORDING TO INTERNAL A0)
OR LOWER DATA STROBE (LDS)
(BASED ON INTERNAL A0)
D15-D8
TERMINATE OUTPUT TRANSFER
TERMINATE OUTPUT TRANSFER
ADDRESS THE DEVICE
ADDRESS THE DEVICE
START NEXT CYCLE
START NEXT CYCLE
BUS MASTER
BUS MASTER
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
Freescale Semiconductor, Inc.
Figure 5-5. Word Write-Cycle Flowchart
Figure 5-6. Byte Write-Cycle Flowchart
For More Information On This Product,
Go to: www.freescale.com
1) DECODE ADDRESS
2) STORE DATA ON D15–D0
3) ASSERT DATA TRANSFER
1) DECODE ADDRESS
2) STORE DATA ON D7–D0 IF LDS IS
3) ASSERT DATA TRANSFER
1) NEGATE DTACK
1) NEGATE DTACK
ACKNOWLEDGE (DTACK)
ASSERTED. STORE DATA ON D15–D8
IF UDS IS ASSERTED
ACKNOWLEDGE (DTACK)
TERMINATE THE CYCLE
TERMINATE THE CYCLE
INPUT THE DATA
INPUT THE DATA
SLAVE
SLAVE
5- 5