IS82C54 Intersil, IS82C54 Datasheet - Page 17

• Manufacturer Part Number: IS82C54
• Description: IC PERIPH UART/BRG 8MHZ 28-PLCC
• Manufacturer: Intersil
• Type: Programmable Timerr

Specifications of IS82C54

• Frequency: 8MHz
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 10mA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-PLCC
• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Count: -

GND
GND
VCC
Timing Waveforms
Burn-In Circuits
F10
F11
F12
Q1
Q2
Q6
F9
F0
A
R1
R1
R1
R1
R1
R1
R1
R1
R2
R1
10
11
12
1
2
3
4
5
6
7
8
9
GATE
OUT
CLK
WR
MD82C54 (CERDIP)
(Continued)
17
24
23
22
21
20
19
18
17
16
15
14
13
MODE
R1
R1
R1
R1
R1
R2
R1
R2
R1
V
CC
(19)
tR
tPWH
(17)
C1
Q3
VCC
GND
Q5
Q4
F2
A
Q8
F1
Q7
A
(SEE NOTE)
COUNT
FIGURE 20. CLOCK AND GATE
A
tWO
(27)
tGS
(23)
tPWL
(18)
V
tGH
CC
R3
R4
82C54
(24)
tWC (28)
tGL
OPEN
GND
F10
F11
F12
NOTES:
10. C1 = 0.01µF Min
11. F0 = 100kHz ±10%
12. F1 = F0/2, F2 = F1/2, ...F12 = F11/2
(22)
F9
F0
1. V
2. GND = 0V
3. VIH = 4.5V ±10%
4. VIL = -0.2V to 0.4V
5. R1 = 47kΩ ±5%
6. R2 = 1.0kΩ ±5%
7. R3 = 2.7kΩ ±5%
8. R4 = 1.8kΩ ±5%
9. R5 = 1.2kΩ ±5%
tF (20)
tODG (26)
tCLK
(16)
R1
R1
R1
R1
R1
R2
CC
= 5.5V ± 0.5V
tGW
(21)
NOTE: LAST BYTE OF COUNT BEING WRITTEN
10
11
5
6
7
8
9
VCC/2 Q6 GND
VCC Q2 Q1 OPEN
12
4
R1
R5 R1
tOD (25)
(23)
tGS
13
MR82C54 (CLCC)
3
R1
14
2
R1
OPEN
15
1
tGH (24)
VCC/2
VCC
16
28
R5 R1 R2
tCL (30)
Q7
Q3 VCC
17 18
27
R1
C1
F1
26
R1
25
24
23
22
21
20
19
R1
R1
R1
R2
R5
R1
OPEN
GND
Q5
Q4
F2
VCC/2
Q8