ꢀ ꢁ ꢂꢃ ꢄ ꢅ ꢆꢃ ꢅ
ꢇ ꢈꢉ ꢈꢊꢋ ꢌ ꢀꢈ ꢉꢍ ꢋ ꢌ ꢎ ꢏꢐ ꢆꢑ ꢀꢀ ꢐꢏ
SOURCED FROM: SGUS014H − FEBRUARY 1991 − REVISED JUNE 2004
SHZ pin timing
The following table defines the timing parameter for the SHZ pin.
timing parameters for SHZ pin (see Figure 30)
320C30-40
320C30-50
†
NO.
UNIT
MIN
MAX
104
105
t
t
Disable time, SHZ low to all O, I/O high impedance
Enable time, SHZ high to all O, I/O active
0* 3P + 15*
ns
ns
dis(SHZ)
0*
2P*
en(SHZ)
†
Numbers in this column are used in Figure 30.
* This parameter is not production tested.
H3
H1
1.5
SHZ
(see
Note A)
104
105
All I/Os
NOTE A: Enabling SHZ destroys SMJ320C30 register and memory contents. Assert SHZ and reset the SMJ320C30 to restore it to a known
condition.
Figure 30. Timing for SHZ
40
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
TI [ TEXAS INSTRUMENTS ]
