Advertisement
Pin Functions
No.
Pin
1
AM & PM
2
10'SHRag & d
3
10'SHRb & e
4
10'SHRc & HRe
5
HRb & g
6
HRc & d
7
HRa & f
8
10'SMIN a & f
9
10'SMIN b & g
10
10'SMIN c & d
11
10'SMINe & MINe
12
MIN b & g
13
MIN c & d
14
MIN a & f
15
COLON
16
ALM INDICATOR
22
RADIO OUTPUT
23
ALM-A OUTPUT
24
ALM-B OUTPUT
Internal equivalent
I/O
circuit
O
LED output pins
O
No.
O
VDD
O
O
O
O
O
O
O
10
11
O
12
O
13
O
14
O
15
16
O
O
(VDD – 15 V breakdown voltage)
O
Outputs a DC voltage. This pin is controlled by the inputs to
the MANUAL & SLEEP pin (pin 26). It operates as a toggle.
During normal operation it outputs a low level (high
VDD
impedance).
(Normal breakdown voltage)
O
Output alarm signals
O
ALM-A OUTPUT: Alarm A
ALM-B OUTPUT: Alarm B
VDD
The output waveform is shown below.
During normal operation these pins output a low level
(high impedance).
(Normal breakdown voltage)
LC85632
Pin function
Pin
Drive phase 1 Drive phase 2
1
AM & PM
AM
2
10'SHR ag & d
10'SHR ad
3
10'SHRb & e
10'SHR e
4
10'SHRc & HRe
HR e
5
HRb & g
HR g
6
HRc & d
HR d
7
HRa & f
HR f
8
10'SMIN a & f
10'SMIN a
9
10'SMIN b & g
10'SMIN b
10'SMIN c & d
10'SMIN c
10'SMINe & MINe
MIN e
MIN b & g
MIN g
MIN c & d
MIN d
MIN a & f
MIN f
COLON
COLON
ALM INDICATOR
ALM-A
MANUAL & SLEEP pin input level
VDD
OPEN
VSS
RADIO OUT pin output level (when pulled down to VSS)
VDD
VSS
ALM-A OUTPUT and ALM-B OUTPUT pin output levels
(summary diagram)
* ALM-A OUTPUT (2400 Hz)
VDD
VSS
* ALM-B OUTPUT (1200 Hz)
VDD
VSS
Output start
Handling when unused
Open
PM
10'SHR g
10'SHR b
10'SHR c
HR b
HR c
HR a
10'SMIN f
10'SMIN g
10'SMIN d
10'SMIN e
MIN b
MIN c
MIN a
—
ALM-B
Open
Open
Continued on next page.
No. 4659-3/34
Advertisement
