MC68HC11PH8 Datasheet, PDF (233/264 Pages) Motorola, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit

A.5.1 Peripheral port timing
(V_DD = 5.0 Vdc ± 10%, V_SS = 0 Vdc, T_A = T_L to T_H)
Characteristic ⁽¹⁾
Symbol
Frequency of operation (E clock frequency)
E clock period
Peripheral data set-up time, all ports ⁽²⁾
Peripheral data hold time, all ports ⁽²⁾
Delay time, peripheral data write
MCU write to port A, B, G or H
MCU write to port C, D or F (t_PWD = t_CYC/4 + 100ns)
f_OP
t_CYC
t_PDSU
t_PDH
t_PWD
2.0 MHz
Min. Max.
0 2.0
500 Ñ
100 Ñ
50 Ñ
Ñ 200
Ñ 225
3.0 MHz
Min. Max.
0 3.0
333 Ñ
100 Ñ
50 Ñ
Ñ 200
Ñ 183
4.0 MHz
Unit
Min. Max.
0 4.0 MHz
250 Ñ ns
100 Ñ ns
50 Ñ ns
ns
Ñ 200
Ñ 162
(1) All timing is given with respect to 20% and 70% of V_DD, unless otherwise noted.
(2) Port C, D and G timing is valid for active drive (CWOM, DWOM, GWOM, WOMS and WOMS2 bits clear).
E clock
Ports
A, C, D, F
Ports
B, E, G, H
MCU read of port
t_PDSU
t_PDH
t_PDSU
t_PDH
Figure A-7 Port read timing diagram
E clock
Ports
C, D, F
Ports
A, B, G, H
MCU write to port
t_PWD
Previous port data
Previous port data
New data valid
t_PWD
New data valid
Figure A-8 Port write timing diagram
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MC68HC11PH8
ELECTRICAL SPECIFICATIONS (STANDARD)
TPG
MOTOROLA
A-9