HCS101/SN Microchip Technology, HCS101/SN Datasheet - Page 3

• Manufacturer Part Number: HCS101/SN
• Description: IC ENCODER FIXED CODE 8-SOIC
• Manufacturer: Microchip Technology
• Type: Fixed Code Encoderr

Specifications of HCS101/SN

• Applications: Remote Control
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.0
As shown in the typical application circuits in Figure 2-
1, the HCS101 is easy to use. It requires only the addi-
tion of buttons and RF circuitry for use as the transmit-
ter in your application. A description of each pin is given
in Table 2-1.
FIGURE 2-1:
TABLE 2-1:
©
Name
DATA
V
V
2001 Microchip Technology Inc.
NC
NC
S0
S1
S2
SS
DD
Note:
B0
B1
V
B3 B2 B1 B0
Number
DEVICE OPERATION
DD
Pin
1
2
3
4
5
6
7
8
Up to 7 functions can be implemented
by pressing more than one button
simultaneously or by using a suitable
diode array.
4 button remote control
2 button remote control
PIN DESCRIPTIONS
S0
S1
S2
NC
Positive supply voltage connection
Pulse Width Modulation (PWM)
Ground reference connection
TYPICAL CIRCUITS
S0
S1
S2
Switch input 2/Clock pin for
NC
output pin/Data pin for
Programming mode
Programming mode
DATA
V
V
NC
No connection
No connection
Switch input 0
Switch input 1
DD
SS
Description
DATA
V
V
NC
DD
SS
V
DD
Tx out
Tx out
Preliminary
The HCS101 will wake-up upon detecting a switch clo-
sure and then delay for a debounce delay (T
shown in Figure 2-2. The device will then update the
16-bit counter before it loads the transmit register. The
data is then transmitted serially on the DATA pin in
Pulse Width Modulation (PWM) format.
If additional buttons are pressed during a transmission,
the current transmission is terminated. The HCS101
restarts and the new transmission will contain the latest
button information. When all buttons are released, the
device completes the current code word and then pow-
ers down. Released buttons do not terminate and/or
restart transmissions.
FIGURE 2-2:
Yes
RESET and Debounce Delay
(A button has been pressed)
Load Transmit Register
Word Transmission
Update Counter
Complete Code
Sample Inputs
ENCODER OPERATION
Power-Up
Released
Transmit
Buttons
Buttons
Added
Stop
All
?
?
No
Yes
HCS101
DS41115C-page 3
No
DB
) as