MA3690/1/3

18/41

Symbol

Description

Min.

Typ.

Max.

Units

t40

RESETN

↓ to ADEN ↓

80

nS

t41

PUCN

↑ to RESETN ↑

2t

t42

RESETN

↑ to ADENN ↑

2t

2t + 80

nS

t43

Initialisation word set-up wrt RESETN

↑

15

nS

t44

Initialisation word HOLD wrt RESETN

↑

20

nS

t45

Minimum RESETN pulse width

90

nS

t46

Minimum CK12 high

33

nS

t47

Minimum CK12 low

20

nS

t48

CK12

↑ to CK4 ↑

90

nS

t49

CK12

↓ to CK4 ↓

90

nS

t50

HALTREQN pulse width

1t

t51

HALTREQN

↑ to HALTEDN ↑

55

nS

t52

HALTREQN

↑ to CODENN ↓

1t

2t

t53

CODENN

↑

to CODENN

↓

2t

t54

RT-RT minimum validation time

1) RT1 = 0

RT0 = 0

55.75

56.25

uS

2) RT1 = 0

RT0 = 1

61 75

62.25

uS

3) RT1 = 1

RT0 = 0

83.75

84.25

uS

4) RT1 = 1

RT0 = 1

147.75

148.25

uS

t55

HALTREQN setup for next message wrt to INCMDN

↑

150

nS

t56

R/WN

↓

to R/WN

↓ RT-BC Report cycle

80t

t57

BUFENN

↑

to BUFENN

↓ Data word to report word

29t

t58

BC intermessage gap

1) without a No Operation instruction

20

uS

2) with a No Operation instruction

28

uS

t59

CODENN interval high between received status

24t

and report word during report cycle

t60

CODENN interval between report word and

6t

next message fetch for continuous operation

t61

CODEN interval between BC Noop data

pointer fetch and report word

5t

t62

INCMDN

↑

to INCADDRN

↓

1t

t63

BUSYREQN

↓ to BUSYACKN ↓

60

nS

t64

BUSYREQN

↑ to BUSYACKN ↑

60

nS

t65

INCMDN

↑

to BUSYACKN

↓

60

nS

t66

INCMDN

↑

to BUSYACKN

↑

100

nS

t67

CK4

↑ to R/WN/BUFENN/CO/C1/CODENN/MDTN

115

nS

Mil-Std-883, method 5005, subgroups 9, 10, 11

Notes:

2. Times quoted as typical means a fixed number of CK4 clock cycles but excludes slight variations due to

propagation delays.

Figure 12: AC Electrical Characteristics (continued)