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K EE L OQ? 3 Development Kit User’s Guide
TABLE 3-2:
Counter Select
PIC16F636 TRANSMITTER CONFIGURATION TRADITIONAL K EE L OQ OPTIONS
Selects the Synchronization Counter size to be the standard 16-bit or extended to 20-bit.
Dual Encoder Enable*
Low Voltage Latch
RF Enable
Makes the S3 pin act as a SHIFT input to select between (sub) encoder #1 and #2
activation.
If enabled, Low battery indication is latched on the first occurrence and remains so until the
battery is changed (i.e., power cycled).
If enabled, this option will produce a high output on the S3 pin to use as an Enable signal
for ASK PLL transmitter circuits. The S3 pin will still be available as a button input, but its
de-bouncing and repeat timing functionality will be affected; its use cannot be
recommended for frequent function codes use.
For the PIC16F636 software encoder, the K EE L OQ plug-in uses the following memory
map:
TABLE 3-3:
MEMORY MAP
Memory location
Description
Encoder
0x00 = A
0x01 = B
0x02 = C
0x03 = B XOR C
0x04 = A XOR B
0x05 = A XOR C
0x08 = A
0x09 = B
0x0A= C
0x0B = B XOR C
0x0C = A XOR B
0x0D = A XOR C
0x10 0x11 0x12 0x13
Sync counter. MSB first.
Checksums for sync counter.
Sync counter. MSB first.
Checksums for sync counter.
32-bit serial number. MSB first.
Encoder 1
Encoder 2
0x14 0x15 0x16 0x17
0x18 0x19 0x1A 0x1B
0x1C
0x1D
0x1E 0x1F 0x20 0x21
0x22 0x23 0x24 0x25
DS41378A-page 22
4-bit seed code + 60-bit seed. MSB first
: ---- --10 Discrimination value first 2 MSB
: ---- 32-- Transmission Modulation Format
: ---4 ---- Header Select
: --5- ---- Extended Serial Number
: -6-- ---- Queue counter
: 7--- ---- Start/Stop Pulse Enable
Discrimination value 8 LSB
64-bit encryption key. MSB first
Encoder 1
? 2009 Microchip Technology Inc.
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