PACE1754 datasheet(4/20 Pages) PYRAMID

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PACE1754

Page 4 of 20

Document # MICRO-5 REV C

AC ELECTRICAL CHARACTERISTICS

1, 2

(VCC = 5V ± 10% Over Recommended Operating Conditions)

20 MHz

30MHz

40 MHz

Symbol

Parameter

Min

Max

Min

Max

Min

Max

Unit

tEX RDY (RDYD)V

Time from External Ready to

Ready Data Valid

tC (RDYD)V

Time from Clock Read to

Ready Data Valid

tSTRBAH (A)V

Time from Strobe Address HIGH to

Address Bus Valid

tIBAV (A)V

Time from Information Bus Address to

Address Bus Valid

tFC (R)L

Time from Falling Clock to

Read LOW

STRBDH (R)H

Time from Strobe Data HIGH to

Read HIGH

STRBDL (W)L

Time from Strobe Data LOW to

Write LOW

STRBDH (W)H

Time from Strobe Data HIGH to

Write HIGH

tIBDIN (ME PA ER)L

Time from Information Bus Data into

Memory Parity Error LOW

tIBAIN (EX AD ER)

Time from Information Bus Address into

External Address Error

STRBDL –

Time from Strobe Data LOW to

(STRT ROM)V

Start-up ROM Valid

tFC (IB OUT)V

Time from Falling Clock to

Information Bus Valid

tC (TIMER CLK)

Time from Rising Edge of Clock to

Timer Clock

tIB INV (IB16)

Time from Information Bus Data to

Parity Valid

tEXT AD (CLKB3)

Extended Address

Setup Time

EX RDY1 (RDYD)V

Time from External Ready Data to

Ready Data Valid

tFC (

SCR EN)

Time from Falling Clock to SCR Enable;

Case Types T and X only

STRBDH (SCR EN)

Time from STRBD HIGH to SCR Enable;

Case Types T and X only

Notes:

1. 4.5V

≤ VCC ≤ 5.5V, –55°C ≤ TC ≤ +125°C. Unless otherwise specified, testing shall be conducted at worst-case conditions.

2. All measurements of delay times on active signals are related to the 1.5V levels.

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