TIBPSG507AC Datasheet, PDF (8/19 Pages) Texas Instruments – 13 × 80 × 8 PROGRAMMABLE SEQUENCE GENERATOR

TIBPSG507AC
13 × 80 × 8 PROGRAMMABLE SEQUENCE GENERATOR
SRPS002D – D3029, MAY 1987 – REVISED NOVEMBER 1995
f_max calculations
The following are the different speeds that can be achieved when using the TIBPSG507AC as a state machine.
The way the 6-bit counter is controlled will largely determine the operating frequency of the state machine.
) ^{fmax for a 6-bit counter using SCLR1 or CNT/HLD1 =} tsu
1
tpd
CLK to Qwhere ^{setup time tsu for input}
or feedback to the S/R inputs = 12 ns and propagation delay time t_pd CLK to Q for the internal S/R
registers = 5 ns (difference in t_pd from CLK and feedback, 25 to 20).
+ + + ^{Thus: f}max ^{for this condition}
1
(12 + 5) ns
1
17 ns
58 MHz.
) ^{fmax for a 6-bit counter using SCLR0 for reset =} tsu
1
tpd
CLK to Qwhere ^{setup time tsu for input or}
feedback to the SCLR0 inputs = 20 ns and propagation delay time t_pd CLK to Q for the internal S/R
registers = 5 ns (difference in t_pd from CLK and feedback, 25 to 20)
+ + + ^{Thus: f}max ^{for this condition}
1
(20 + 5) ns
1
25 ns
40 MHz.
) ^{fmax for a 6-bit counter using CNT/HLD0 for reset =} tsu
1
tpd
CLK to Qwhere ^{setup time tsu for input or}
feedback to CNT/HLD0 = 25 ns and propagation delay time t_pd CLK to Q for the internal S/R registers = 5 ns
(difference in t_pd from CLK and feedback, 25 to 20).
+ + + ^{Thus: f}max ^{for this condition}
1
(25 + 5) ns
1
30 ns
33 MHz.
programming information
Texas Instruments programmable logic devices can be programmed using widely available software and
inexpensive device programmers.
Complete programming specifications, algorithms, and the latest information on hardware, software, and
firmware are available upon request. Information on programmers that are capable of programming Texas
Instruments programmable logic is also available, upon request, from the nearest TI sales office, local
authorized TI distributor, or by calling Texas Instruments at [phone].
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