OX16C950 rev B
OXFORD SEMICONDUCTOR LTD.
17.2 3V Operation
These figures assume the TQFP package, with VSEL applied for 3V operation.
I/O signals, CPU interface and UART signals are 5V tolerant.
Symbol
VDD
VIH
Parameter
Supply voltage
Input high voltage
Condition
Commercial
TTL Interface Note1
TTL Schmitt trigger
TTL Interface Note 1
TTL Schmitt trigger
Min.
3.0
0.7 VDD
TBD
-0.5
Max.
Units
V
V
3.45
VDD + 0.5
TBD
0.2 VDD
TBD
VIL
Input low voltage
V
TBD
CIL
COL
IIH
Capacitance of input buffers
Capacitance of output buffers
Input high leakage current
Input low leakage current
Output high voltage
Output high voltage
Output low voltage
Output low voltage
3-state output leakage current
Static current
5.0
10.0
1
1
pF
pF
µA
µA
V
V
V
V
Vin = VDD
Vin = VSS
-1
-1
IIL
VOH
VOH
VOL
VOL
IOZ
VDD – 0.05
2.4
IOH = 1 µA
IOH = 4 mA Note2
IOL = 1 µA
0.05
0.4
1
100
TBD
IOL = 4 mA Note2
-1
45
TBD
µA
µA
mA
IST
ICC
Vin = VDD or VSS
Operating supply current in fCK = 1.8432 MHz
normal mode Note3
f
f
CK = 7.372 MHz
CK = 60.00 MHz
Operating supply current in sleep fCK = 1.8432 MHz
TBD
TBD
mode Note3
fCK = 7.372 MHz
CK = 60.00 MHz
f
Table 23: DC Electrical Characteristics
Note 1: All input buffers are TTL with the exception of RESET which is a Schmitt trigger buffer.
Note 2: and I are 6 mA for DB[7:0] and 2 mA for all other outputs.
I
OH
OL
Note 3: For further details on operating current please refer to the’OX16C95x Test Document’.
Data Sheet Revision 1.2
Page 41
OXFORD [ OXFORD SEMICONDUCTOR ]
