Datasheet

Electrical Specifications
Technical Data MC68HC912DT128A — Rev 4.0
434 Electrical Specifications MOTOROLA
Figure 21-6. Port Read Timing Diagram
Figure 21-7. Port Write Timing Diagram
Table 21-13. Peripheral Port Timing
Characteristic Symbol
8.0 MHz
Unit
Min Max
Frequency of operation (E-clock frequency)
f
o
0.004 8.0 MHz
E-clock period
t
cyc
0.125 250 µs
Peripheral data setup time
MCU read of ports
t
PDSU
81 — ns
Peripheral data hold time
MCU read of ports
t
PDH
0—ns
Delay time, peripheral data write
MCU write to ports except Port CAN
t
PWD
—40ns
Delay time, peripheral data write
MCU write to Port CAN
t
PWD
—71ns
PORT RD TIM
ECLK
MCU READ OF PORT
PORTS
t
PDSU
t
PDH
PORT WR TIM
ECLK
MCU WRITE TO PORT
PREVIOUS PORT DATA NEW DATA VALID
PORT A
t
PWD
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...