Datasheet

Output Driver Characteristic of Connectivity Test ( CT ) Mode
Following Output driver impedance R
ON
will be applied Test Output Pin during Connectivity Test (CT) Mode.
The individual pull-up and pull-down resistors (R
ONPu_CT
and R
ONPd_CT
) are defined as follows:
R
ONPu_CT
=
V
DDQ
- Vout
| I out |
R
ONPd_CT
=
Vout
| I out |
To other
circuitry like
VSSQ
Chip In Drive Mode
R
ONPu_CT
I
pu_CT
DQ
VDDQ
Output Drive
I
pd_CT
R
ONPd_CT
I
out
V
out
Figure 181. Output Driver Characteristic of Connectivity Test
Table 95. Output Driver Electrical Characteristics during Connectivity Test Mode
R
ON_NOM
Resistor
Vout
Max.
Unit
Note
34Ω
R
ON
Pd_CT
V
OB
dc= 0.2 x V
DDQ
1.9
34Ω
1
V
OL
dc= 0.5 x V
DDQ
2.0
34Ω
1
V
OM
dc= 0.8 x V
DDQ
2.2
34Ω
1
V
OH
dc= 1.1 x V
DDQ
2.5
34Ω
1
R
ON
Pu_CT
V
OB
dc= 0.2 x V
DDQ
2.5
34Ω
1
V
OL
dc= 0.5 x V
DDQ
2.2
34Ω
1
V
OM
dc= 0.8 x V
DDQ
2.0
34Ω
1
V
OH
dc= 1.1 x V
DDQ
1.9
34Ω
1
Note 1. Connectivity test mode uses un-calibrated drivers, showing the full range over PVT. No mismatch between pull up and pull down
is defined.
AS4C256M16D4
Confidential
- 189 of 201 -
Rev.1.0 Aug.2019