82C55A Intersil Corporation, 82C55A Datasheet - Page 21

• Manufacturer Part Number: 82C55A
• Description: CMOS Programmable Peripheral Interface
• Manufacturer: Intersil Corporation

Timing Waveforms
AC Test Circuit
NOTE: Includes STRAY and JIG Capacitance
Burn-In Circuits
NOTES:
A0-A1,
DATA
GND
1. V
2. VIH = 4.5V
3. VIL = -0.2V to 0.4V
4. GND = 0V
BUS
WR
F10
F10
F10
CS
F6
F7
F8
F9
F4
F3
F0
F1
F6
F7
F8
F9
F6
F7
F8
F9
CC
DEVICE UNDER
OUTPUT FROM
= 5.5V
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10%
TEST
0.5V
FIGURE 30. WRITE TIMING
MD82C55A CERDIP
tAW (7)
(Continued)
V1
R1
R2
tDW (10)
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
tWW (9)
C1
(SEE NOTE)
tWD (11)
F11
F12
F13
F14
F2
F5
F15
F11
F12
F13
F14
F15
F11
F12
F13
F14
F15
F11
F12
TEST
POINT
V
tWA (8)
CC
C1
82C55A
NOTES:
21
GND
1. C1 = 0.01 F minimum
2. All resistors are 47k
3. f0 = 100kHz
4. f1 = f0
F10
F10
F0
F1
F6
F7
F8
F9
F6
AC Testing Input, Output Waveforms
AC Testing: All AC Parameters tested as per test circuits. Input RISE and
A0-A1,
DATA
BUS
VIH + 0.4V
VIL - 0.4V
CS
RD
TEST CONDITION
INPUT
2; f2 = f1
FALL times are driven at 1ns/V.
1
2
3
10
11
12
13
14
15
16
17
7
8
9
1.5V
TEST CONDITION DEFINITION TABLE
18
6
10%
19
5
FIGURE 31. READ TIMING
2; . . . ; f15 = f14
20
tAR (1)
4
MR82C55A CLCC
21
5%
3
1.7V
V
1.5V
V1
CC
22
(4) tRD
HIGH IMPEDANCE
2
23
1
44
24
523
750
2k
43
25
R1
2
tRR (3)
26
42
41
27
VALID
28
1.7k
40
Open
Open
R2
1.5V
39
38
37
36
35
34
33
32
31
30
29
C1
tRA (2)
tDF (5)
OUTPUT
150pF
VOH
VOL
50pF
50pF
C1
F5
F15
F11
F12
F13
F14
F15
F11
F12