SC28C94A1A,518 NXP Semiconductors, SC28C94A1A,518 Datasheet - Page 30

• Manufacturer Part Number: SC28C94A1A,518
• Description: IC UART QUAD W/FIFO 52-PLCC
• Manufacturer: NXP Semiconductors

Specifications of SC28C94A1A,518

• Features: False-start Bit Detection
• Number Of Channels: 4, QUART
• Fifo's: 8 Byte
• Voltage - Supply: 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-1114-2; 935262534518; SC28C94A1A-T

Philips Semiconductors
2006 Aug 09
Quad universal asynchronous receiver/transmitter (QUART)
NOTE: I/O PIN DATA IS NOT LATCHED
I/O as Output
NOTES:
1. INCLUDES I/O WHEN USED AS TxRDY or RxDY/FFULL OUTPUTS AS WELL AS IRQN.
2. 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
SURES TRUE SWITCHING HAS OCCURRED. BEYOND THIS LEVEL, THE EFFECTS OF EXTERNAL CIRCUITRY AND TEST ENVIRONMENT ARE PRONOUNCED
AND CAN GREATLY AFFECT THE RESULTANT MEASUREMENT.
I/O as Input
WRN
RDN
CEN
I/O PINS MUST BE STABLE FOR NON-CHANGING BUS DATA DURING THE READ.
INTERRUPT
INTERRUPT
OUTPUT
OUTPUT
WRN
RDN
RESET
1
1
t
PS
OLD DATA
V
M
Figure 12. Interrupt Timing
t
Figure 11. I/O Port Timing
PD
Figure 10. Reset Timing
M
, TO A POINT 0.5V ABOVE V
t
IR
t
IR
t
30
RES
OL
. THIS POINT REPRESENTS NOISE MARGIN THAT AS-
t
PD
V
t
PH
OL
V
OL
+0.5V
SD00169
+0.5V
V
OL
NEW DATA
V
OL
SC28C94
SD00170
Product data sheet
SD00171