SC28L91A1A,512 NXP Semiconductors, SC28L91A1A,512 Datasheet - Page 34

• Manufacturer Part Number: SC28L91A1A,512
• Description: IC UART SINGLE W/FIFO 44-PLCC
• Manufacturer: NXP Semiconductors
• Series: IMPACTr

Specifications of SC28L91A1A,512

• Features: False-start Bit Detection
• Number Of Channels: 1, UART
• Fifo's: 16 Byte
• Voltage - Supply: 3.3V, 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: 44-PLCC
• Voltage: 3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935267418512; SC28L91A1A; SC28L91A1A

Philips Semiconductors
NOTE:
2004 Oct 21
3.3 V or 5.0 V Universal Asynchronous
Receiver/Transmitter (UART)
For Figures 6 and 7 WRN changing within the time of CEN low may cause short read or write pulses that could upset internal pointers and
registers. Bus action terminates on the rise of CEN or the fall of DACKN, which ever occurs first.
NOTE: DACKN low requires two rising edges of X1 clock after CSN is low.
NOTE: DACKN low requires two rising edges of X1 clock after CSN is low.
DTACKN
X1/CLK
DTACKN
D0–D7
A1–A4
X1/CLK
D0–D7
RWN
A1–A4
CSN
RWN
CSN
t
DA
Figure 6. Bus Timing (Read Cycle) (68XXX mode)
Figure 7. Bus Timing (Write Cycle) (68XXX mode)
t
t
AS
AS
t
CS
t
VALID
CS
t
t
NOT
CSC
DD
t
t
DS
CSC
t
AH
t
AH
t
DCW
t
DCR
34
DATA VALID
t
DAT
t
DAT
t
RWD
t
RWD
t
t
t
CH
t
CH
t
DAH
t
DF
DH
DAH
SD00687
SD00688
SC28L91
Product data sheet