W55RFS27R3C Datasheet, PDF (3/12 Pages) Winbond – Super-Regeneration RF Receiver

W55RFS27R3C DataSheet
General Description
nuvoton W55RFS27R3C is a fully
integrated S-R (Super-regeneration) RF receiver
with full-function of baseband control command
decoder for application of R/C vehicle, toy, or
wireless data communication. W55RFS27R3C
provides both uC-mode for simple logic interface to
general purpose of micro-controller and manual-
mode for baseband control command decoder.
Manual-mode is designed with Winbond
patented ChannelShared^WB protocol for multi-
player application. Up to 3 players is allowed
simultaneously playing in the same frequency band.
There are 6 function available in Manual-mode, i.e.,
.
Forward, Backward, Left-turn, Right-turn, and two
other reserved function F1, F2 for light, horn or
other control function.
uC-mode can be controlled by general
purpose micro-controller to support R/C toy, or
wireless data communication.
The associate transmitter W55RFS27T3B
provides the FCC/ETSI regulation provisions for
27MHz, 40MHz, and 49MHz S-R (Super-
regeneration) demodulation and wide range of
operating voltage 2.1V ~ 5.5V for 2-battery or 3-
battery R/C toy application.
1.1 W55RFS27R3C Features
 Winbond patented ChannelShared^WB
protocol enables maximum 3 players
simultaneously playing in one frequency
band.
 On-chip LNA provides very good isolation
so that receivers can work together without
interference.
 Enhanced receiver circuit provides higher
sensitivity than traditional super-regenerative
circuits.
 Operating frequency: 27MHz to 49MHz
(depend on oscillator frequency)
 Very low operating voltage: 2.2V ~ 5.5V
 Receiving data rates up to 2.5Kbps for 50%
duty cycle
 Supports 6-function of R/C toy baseband
control command decoder
 Power down current consumption less than
1uA
 Less manual adjustment needed in
production
 Lower manufacture production cost
 Associate transmitter W55RFS27T3B
compliant to FCC part 15 Subpart C 15.227 /
ETSI 300 220-1 low-power & short-range
device requirements
 Operating temperature: 0C ~ 70C
3
Revision: A1.0
Publish Date: Feb. 2010