mc68hc912bc32 Freescale Semiconductor, Inc, mc68hc912bc32 Datasheet - Page 325

• Manufacturer Part Number: mc68hc912bc32
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

19.15 Peripheral Port Timing
Freescale Semiconductor
Frequency of operation
E-clock period
Peripheral data setup time
Peripheral data hold time
Delay time, peripheral data write
Delay time, peripheral data write
E-clock frequency
MCU read of ports
t
MCU read of ports
MCU write to ports
MCU write to port CAN
PDSU
= t
cyc
PORT A
PORTS
ECLK
ECLK
/2 + 40
Characteristic
Figure 19-11. Port Write Timing Diagram
Figure 19-10. Port Read Timing Diagram
M68HC12B Family Data Sheet, Rev. 9.1
MCU READ OF PORT
PREVIOUS PORT DATA
MCU WRITE TO PORT
t
PDSU
Symbol
t
t
t
PDSU
t
PWD
PWD
t
PDH
cyc
f
o
t
t
PDH
PWD
Min
125
102
dc
—
—
0
NEW DATA VALID
8.0 MHz
Peripheral Port Timing
Max
8.0
40
71
—
—
—
MHz
Unit
ns
ns
ns
ns
ns
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