BC2102 Datasheet, PDF (6/15 Pages) Holtek Semiconductor Inc – Sub-1GHz OOK/FSK Transmitter

BC2102
State Control
The BC2102 has integrated state machines that control the state transition between modes.
Power On State
Power On State
Power off
Power off
After power up VDD
(Insert the battery)
After power up VDD
(Insert the battery)
Yes
Copy fuse
Data to register
Copy finish
Check
EFPGM=1
No
POR
Procedure
Normal Mode
Deep Sleep
DIN LèH
or PCLK HèL
Transmitting
Yes
Copy fuse
Data to register
Copy finish
Check
EFPGM=1
No
POR
Procedure
Normal Mode
Deep Sleep
DIN LèH
or PCLK HèL
Transmitting
l²C Mode
{DIN keep High
& PCLK Low(>16us)
Detect High edge} or
I²C time out(20ms)
I²C Mode
4~32ms Timer TOFF[3:0]=F
times up
& DIN LèH
Transmit Done
& DIN HèL
Standby
& Time on
State Machine when connected with Encoder
4~32ms Timer TOFF[3:0]=F
times up
& DIN LèH
Transmit Done
& DIN HèL
Standby
& Time on
DIN keep High
& PCLK Low(>16us)
Detect High edge
State Machine when connected with MCU
Power On State
After power-on, perhaps by the insertion of a battery,
if the EFPGM bit state is high, the FUSE data will be
automatically copied to the corresponding registers.
When completed the device will enter the Deep Sleep
Mode after a POR delay time. Note that the device
will directly enter the Deep Sleep Mode after a delay
time if the EFPGM bit is low.
Normal Mode
After a power-on reset operation, the device enters
the Deep Sleep Mode. Data will be transmitted if the
DIN pin is pulled high or the pulse on the PCLK pin
changes from high to low. When data transmission is
finished and the DIN pin state changes from high to
low, the device will enter the Standby state and the
Timer, whose timeout period is determined by DLY_
TOFF bits in the CFG1 register, will turn on and start
to count. The device will return to the Deep Sleep
Mode when the Timer overflows. However, it should
be noted that when the DLY_TOFF[3:0] bit value is
"1111", the device will start to transmit again without
entering the Deep Sleep Mode once the DIN pin state
changes from low to high.
STATE
Sleep
tStartup
tST
High
DIN
Low
Transmit
Valid TX Data
Stop
Low
Sleep
PA Out
10µs
RF Signal
TX Enabled by DIN Pin
Rev. 1.00
6
December 21, 2016