TC815CBU View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
TC815CBU
Microchip Technology
TC815CBU Datasheet PDF : 26 Pages
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TABLE 9-1:
PAD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
BP1
BP1
/
/
/
/
HOLD
b1
a1
f1
b2
a2
f2
b3
a3
f3
b4
AC
BP2
/
BP2
/
LOΩ
W
k
c1
g1
e1
c2
g2
e2
c3
g3
e3
c4
–MEM
BP3
/
/
BP3
A
V
m
/
d1
/
P2
d2
/
P3
d3
/
P4
Auto
/
TC815
PAD
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
COM1
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
COM2
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
COM3
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
10.0 EXTERNAL CRYSTAL
The TC815 is designed to operate with a 32,768Hz
crystal. This frequency is internally divided by two to
give a 61.04µsec clock period. One conversion takes
8000 clock periods or 488.3 msec ( ≈ 2 conversions/
second). Integration time is 1638.5 clock periods or
100msec.
The 32kHz quartz crystal is readily available and inex-
pensive. The 32kHz crystal is commonly used in digital
clocks and counters.
Several crystal sources exist. A partial listing is:
• Statek Corporation
512 N. Main
Orange, CA 92668
(714) 639-7810
TWX: 910-593-1355
TELEX: 67-8394
• Fox Electronics
5570 Enterprise Parkway
Fort Myers, FL 33905
(941) 693-0099
Contact manufacturer for full specifications.
© 2002 Microchip Technology Inc.
DS21474B-page 19
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