MC68306EH16B Freescale Semiconductor, MC68306EH16B Datasheet - Page 37

• Manufacturer Part Number: MC68306EH16B
• Description: IC MPU INTEGRATED 16MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68306EH16B

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-MQFP, 132-PQFP
• Controller Family/series: 68K
• Core Size: 32 Bit
• Cpu Speed: 16.7MHz
• No. Of Timers: 1
• Embedded Interface Type: UART
• Digital Ic Case Style: PQFP
• Supply Voltage Range: 4.75V To 5.25V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

strobe. When the A0 bit equals zero, UDS is asserted; when the A0 bit equals one, LDS is
asserted.
The word write cycle flowchart is shown in Figure 3-5. The byte write cycle flowchart is
shown in Figure 3-6. The word and byte write cycle timing is shown in Figure 3-7.
MOTOROLA
1) PLACE FUNCTION CODE ON FC2–FC0
2) PLACE ADDRESS ON ADDRESS BUS
3) ASSERT ADDRESS STROBE (AS)
4) SET R/W TO WRITE
5) PLACE DATA ON D15–D0
6) ASSERT UPPER DATA STROBE (UDS)
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)
TERMINATE OUTPUT TRANSFER
ADDRESS THE DEVICE
START NEXT CYCLE
BUS MASTER
Freescale Semiconductor, Inc.
Figure 3-5. Word Write Cycle Flowchart
For More Information On This Product,
MC68306 USER'S MANUAL
Go to: www.freescale.com
1) DECODE ADDRESS
2) LATCH DATA ON D15–D0
3) ASSERT DATA TRANSFER
1) NEGATE DTACK
ACKNOWLEDGE (DTACK)
TERMINATE THE CYCLE
INPUT THE DATA
SLAVE
3- 5