Datasheet

Chapter 20. Electrical Specifications 20-19
UART Module AC Timing Specifications
Figure 20-18. I
2
C Input/Output Timings
20.8 UART Module AC Timing Specifications
Table 20-13 lists specifications for UART module AC timing parameters in Figure 20-19.
Figure 20-19 shows UART0 and UART1 timing for the values in Table 20-13.
Table 20-13. UART Module AC Timing Specifications
Num Characteristic
54 MHz CLKIN
Units
Min Max
U1 RXD valid to CLKIN (input setup) 7.5 — nS
U2 CLKIN to RXD invalid (input hold) 1.0 — nS
U3 CTS
valid to CLKIN (input setup) 7.5 — nS
U4 CLKIN to CTS
invalid (input hold) 1.0 — nS
U5 CLKIN to TXD valid (output valid) — 10 nS
U6 CLKIN to TXD invalid (output hold) 1.0 — nS
U7 CLKIN to R
TS valid (output valid) — 10 nS
U8 CLKIN to R
TS invalid (output hold) 1.0 — nS
U9 CTS
high time 38 — nS
U10 CTS
low time 38 — nS
U11 CTS
rising to TxD valid — 20 nS
U12 RxD setup to CTS
falling 10 — nS
U13 RxD hold from CTS
falling — 5nS
U14 TxD to RxD (remote loop back) — 15 nS
U15 TIN1 setup to CTS
falling 10 — nS
U16 TIN1 hold from CTS
falling — 5nS
U17 CTS
rising to RTS asserted — 20 nS
I2 I6
I1 I4
I7
I8 I9
I5
I3
SCL
SDA