scc2681t NXP Semiconductors, scc2681t Datasheet - Page 10

• Manufacturer Part Number: scc2681t
• Description: Dual Asynchronous Receiver/transmitter Duart
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2004 Apr 06
Dual asynchronous receiver/transmitter (DUART)
NOTES:
1.
2.
INTRN or OP3-OP7 when used as interrupt outputs.
The test for open drain outputs is intended to guarantee switching of the output transistor. Measurement of this response is referenced from the midpoint of the switching
signal, V
test environment are pronounced and can greatly affect the resultant measurement.
M
, to a point 0.5V above V
OP0–OP7
IP0–IP6
WRN
RDN
t
PS
OL
INTERRUPT
. This point represents noise margin that assures true switching has occurred. Beyond this level, the effects of external circuitry and
OUTPUT
WRN
1
OLD DATA
Figure 6. Interrupt Timing
Figure 5. Port Timing
(a) INPUT PINS
(b) OUTPUT PINS
10
V
t
PD
M
t
t
PH
IR
V
NEW DATA
OL
+0.5V
V
OL
SD00101
SCC2681T
SD00102
Product data