MC912DG128ACPVE Datasheet, PDF (434/478 Pages) Freescale Semiconductor, Inc – Upward compatible with M68HC11 instruction set

Freescale Semiconductor, Inc.
Electrical Specifications
Table 21-13. Peripheral Port Timing
Characteristic
Frequency of operation (E-clock frequency)
E-clock period
Peripheral data setup time
MCU read of ports
Peripheral data hold time
MCU read of ports
Delay time, peripheral data write
MCU write to ports except Port CAN
Delay time, peripheral data write
MCU write to Port CAN
Symbol
f_o
t_cyc
t_PDSU
t_PDH
t_PWD
t_PWD
8.0 MHz
Min
Max
0.004
8.0
0.125
250
81
—
Unit
MHz
µs
ns
0
—
ns
—
40
ns
—
71
ns
ECLK
PORTS
MCU READ OF PORT
t_PDSU
t_PDH
Figure 21-6. Port Read Timing Diagram
PORT RD TIM
ECLK
PORT A
MCU WRITE TO PORT
PREVIOUS PORT DATA
t_PWD
NEW DATA VALID
PORT WR TIM
Figure 21-7. Port Write Timing Diagram
Technical Data
434
MC68HC912DT128A — Rev 4.0
Electrical Specifications
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