SC28C198A1A PHILIPS [NXP Semiconductors], SC28C198A1A Datasheet - Page 44

• Manufacturer Part Number: SC28C198A1A
• Description: Octal UART for 3.3V and 5V supply voltage
• Manufacturer: PHILIPS [NXP Semiconductors]

1. Timing is illustrated and referenced with respect to W–RN and CEN inputs. Internal read and write activities are controlled by the Sclk as it
2. The minimum time before the rising edge of the next C2 time to stop the next bus cycle. CEN must return high after midpoint of C4 time and
3. Delay is from CEN high in Async mode to IRQN inactive, from end of C4 to IRQN inactive in Sync mode.
4. The minimum frequency values are not tested, but are guaranteed by design.
5. 1MHz specification is for crystal operation.
Philips Semiconductors
AC ELECTRICAL CHARACTERISTICS FOR COMMERCIAL AND INDUSTRIAL (5V) (Continued)
V
NOTES:
1999 Jan 14
Sclk Timing
t
t
F
t/
X1/X2 Communication Crystal Clock
Fx1
X1 L / H
T/RFx1
Counter/Timer Baud Rate Clock (External Clock Input)
FC/T
TC/TLH
TC/TO
DTACK Timing
DAKdly
DAKdlya
DAKdlys
I/O Port External Clock
tgpirtx
Gout Timing
GPOtdd
CC
sclkl
sclkh
sclk
RFsck
Octal UART for 3.3V and 5V supply voltage
SYMBOL
generates the several “C” timing as shown in the timing diagrams.
before the C2 time of the next cycle.
= 5.0 volts " 10%; T
5
4
FIG#
A
= –40 to 85 C; unless otherwise specified
Min low time at V
Min high time at V
Sclk frequency
Sclk rise and fall time (0.8 to 2.0Volts)
X1 Low / High time
X1 Rise and Fall time
Clock frequency
C/T high and low time
Delay C/T clock external to output pin
DACK low from Sclk C4 rising edge
DACK high from CEN high (Async)
DACK high from C4 end rising edge (Sync)
GPI to Rx/Tx clock out
RxD setup to I/OP rising edge 1X mode
I/OP falling edge to TxD out 1X mode
GPO valid after write to GPOR
X1 clock frequency
IL
IH
(0.8V)
(2.0V)
PARAMETER
44
MIN
0.1
11
11
32
15
20
1
0
LIMITS
3.6864
TYP
135
100
11
48
10
11
11
32
32
5
5
2
SC28L198
Product specification
MAX
8.0
33
10
60
18
20
20
50
60
3
8
UNIT
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns