NS486SXL Datasheet, PDF (23/26 Pages) National Semiconductor (TI) – Optimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded Systems

PIC AC Specs (Continued)
TABLE 23. PIC Timing Specifications (Continued)
Symbol
t_picrlrh
t_picrhax
t_picrldv
t_picrhdz
t_picrhrl
Parameter
Min
235
0
10
100
MICROWIRE (3-Wire) and Access.bus
Typ
Max
200
FIGURE 13. Access.bus Timing Diagram
TABLE 24. Access.Bus Timing Specifications
DS100121-18
Symbol
t_sclk
t_buf
t_flow
t_high
t_dhold
t_dset
t_su:sto
t_su:sta
Parameter
SCLK Clock Frequency
Bus Free Time between STOP and START Condition
Low Period of the SCLK Clock
High Period of the SCLK Clock
Data Hold Time
Data Setup Time
Setup Time for STOP Condition
Hold Time for START Condition
Formula
Min
4.7 µs
4.7 µs
4.0 µs
250
250
4.0 µs
4.7 µs
FIFO UART
Symbol
D
N
t_BHD
t_BLD
Parameter
OSC Clock Divider
Baud Divisor
Baud Output Positive Edge Delay
Baud Output Negative Edge Delay
Conditions
Min
Max
1
63
1
65535
56
56
Max
100 kHz
Units
CLKs
CLKs
ns
ns
23
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