HCS101/SN Microchip Technology, HCS101/SN Datasheet - Page 5

• 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

4.0
The HCS101 contains 192 bits (12 x 16-bit words) of
EEPROM memory as shown in Table 4-1. Further
descriptions of the memory array are given in the fol-
lowing sections.
TABLE 4-1:
4.1
This is the 16-bit gray code counter value that can be
used to track the number of times a transmitter has
been activated.
4.2
SER_1, and SER_2 are the 32-bit device serial num-
bers. SER_3 is an additional 10-bit serial number trans-
mitted with every transmission. The most significant 6
bits of the 16-bit SER_3 word are reserved and should
be set to zero.
4.3
The configuration word is a 16-bit word stored in the
EEPROM array that is used by the device to store the
status configuration options. Further explanations of
each of the bits are described in the following sections.
©
ADDRESS
2001 Microchip Technology Inc.
WORD
10
11
0
1
2
3
4
5
6
7
8
9
EEPROM MEMORY
ORGANIZATION
CNTR (Counter)
SER_1, SER_2, SER_3 (Encoder
Serial Number)
Configuration Word
MNEMONIC
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
CONFIG
SER_1
SER_1
SER_2
SER_2
SER_3
CNTR
EEPROM MEMORY MAP
Device Serial Number 1
Device Serial Number 1
Device Serial Number 2
Device Serial Number 2
Device Serial Number 3
(word 1) 16 MSb’s
(word 1) 16 MSb’s
(word 0) 16 LSb’s
(word 0) 16 LSb’s
DESCRIPTION
Set to 0000H
Set to 0000H
Set to 0000H
Set to 0000H
Set to 0000H
Config Word
Counter
Preliminary
TABLE 4-2:
4.3.1
These bits are used to tune the nominal frequency of
the HCS101 to within ±10% of its nominal value over
temperature and voltage.
4.3.2
The low voltage trip point select bit (V
setting bit (S3SET) are used to determine the voltage
level for the low voltage detector.
* See also Section 4.3.6
4.3.3
BRS selects the speed of transmission and the code
word blanking. Table 4-3 shows how the bit is used to
select the different baud rates and Section 5.2 provides
a detailed explanation of code word blanking.
TABLE 4-3:
Bit Number
BRS
0
1
V
10
12
13
14
15
11
0
1
2
3
4
5
6
7
8
9
LOWS
0
0
1
1
OSCILLATOR TUNING BITS
(OSC0 TO OSC3)
LOW VOLTAGE TRIP POINT
SELECT (V
BAUDRATE SELECT BITS (BRS)
Basic Pulse
Element
400µs
200µs
CONFIGURATION WORD
BAUDRATE SELECT
S3SET*
LOWS
0
1
0
1
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
Bit Name
)
S3SET
V
OSC0
OSC1
OSC2
OSC3
XSER
MTX4
TXEN
BRS
LOWS
HCS101
Code Words
Transmitted
LOWS
DS41115C-page 5
1 out of 2
Trip Point
All
) and the S3
6.75
4.4
4.4
9