SCC2698B Philips Semiconductors, SCC2698B Datasheet - Page 19

• Manufacturer Part Number: SCC2698B
• Description: Enhanced octal universal asynchronous receiver/transmitter Octal UART
• Manufacturer: Philips Semiconductors

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1. Parameters are valid over specified temperature range. See ordering information table for applicable temperature range and operating
2. All voltage measurements are referenced to ground (GND). For testing, all inputs swing between 0.4V and 2.4V with a transition time of 20ns
3. Typical values are at +25 C, typical supply voltages, and typical processing parameters.
4. Test condition for interrupt and MPP outputs: C
5. Timing is illustrated and referenced to the WRN and RDN inputs. The device may also be operated with CEN as the ‘strobing’ input. CEN
6. If CEN is used as the ‘strobing’ input, the parameter defines the minimum high times between one CEN and the next. The RDN signal must
7. Consecutive write operations to the command register require at least three edges of the X1 clock between writes.
8. This value is not tested, but is guaranteed by design.
9. See UART applications note for power down currents less than 5 A.
10. Operation to 0MHz is assured by design. Minimum test frequency is 2MHz.
11. Address is latched on leading edge of read or write cycle.
Philips Semiconductors
DC ELECTRICAL CHARACTERISTICS
NOTES:
2000 Jan 31
SYMBOL
SYMBOL
V
V
V
V
V
I
I
I
I
I
I
I
I
I
I
I
IL
IH
I
ILX1
IHX1
OZH
OZL
ODL
ODH
CC
CC
Enhanced octal universal asynchronous
receiver/transmitter (Octal UART)
supply range.
maximum. For X1/CLK this swing is between 0.4V and 4.4V. All time measurements are referenced at input voltages of V
appropriate.
and RDN (also CEN and WRN) are ANDed internally. As a consequence, the signal asserted last initiates the cycle and the signal negated
first terminates the cycle.
be negated for t
IL
IH
IH
OL
OH
Input low voltage
Input high voltage (except X1/CLK)
Input high voltage (X1/CLK)
Output Low voltage
Output High voltage (except OD outputs)
Input current Low, MPI and MPP pins
Input current High, MPI and MPP pins
Input leakage current
X1/CLK input Low current
X1/CLK input High current
Output off current High, 3-State data bus
Output off current Low, 3-State data bus
Open-drain output Low current in off state: IRQN
Open-drain output Low current in off state: IRQN
Power supply current
Operating mode
Power down mode
RWD
guarantee that any status register changes are valid.
PARAMETER
PARAMETER
9
L
1, 2, 3 T
= 50pF, R
A
= 0 to +70 , V
L
= 2.7k to V
19
V
V
TEST CONDITIONS
TEST CONDITIONS
IN
IN
CC
= GND, X2 = open
V
CC
I
I
= V
OH
OH
I
IN
OL
= 5.0 V
V
V
V
. Test conditions for rest of outputs: C
V
IN
IN
V
IN
V
= 0 to V
CC
= –400 A
= –100 A
= 2.4mA
IN
IN
IN
= V
= V
= V
, X2 = open
= 0
= 0
= 0
CC
CC
CC
CC
10%, –40 to 85 C
0.8V
0.8V
0.9V
–100
Min
–50
–10
–10
–10
2.0
CC
CC
CC
LIMITS
Typ
L
= 150pF.
SCC2698B
Product specification
Max
100
0.8
0.4
2.0
20
10
10
10
30
IL
and V
IH
, as
UNIT
UNIT
mA
mA
V
V
V
V
V
V
A
A
A
A
A
A
A