HT46R01T3/HT48R01T3
8-Bit OTP MCU with RF Transmitter
Pin Name Function
OPT
PAWK
CO
I/T
ST
ST
O/T
Description
PA7
PA7/RES
RES
NMOS General purpose I/O. Register enabled wake-up.
Reset input
¾
General purpose I/O. Register enabled pull-up.
PB1
PBPU
ST
CMOS Internally connected to DIN pin on RF module.
Must be setup as output for interfacing to RF module.
PB1/DOUT
Data output from MCU to RF module
DOUT
¾
¾
¾
Connected internally to PB1
PAOUT
XOUT
XIN
PAOUT
XOUT
XIN
NSO RF power amplifier output
HXT RF chip crystal pin
¾
¾
¾
¾
¾
¾
¾
¾
¾
HXT
PWR
PWR
PWR
PWR
RF chip crystal pin
MCU power supply
MCU ground
¾
¾
¾
¾
¾
VDD
VDD
VSS
VSS
AVDD
AVSS
AVDD
AVSS
RF chip power supply
RF chip ground
Note: I/T: Input type
O/T: Output type
OPT: Optional by configuration option (CO) or register option
PWR: Power
CO: Configuration option
ST: Schmitt Trigger input
CMOS: CMOS output
NSO: Non-standard output
Internally Connected Pins
In addition to the internal connection between MCU pin, PB1, and RF Transmitter pin, DIN, the MCU
pin, PB0, and RF Transmitter pin, CREF, are also internally connected. However it should be noted
that PB0/CREF is not connected to any external pins on the device package.
Pin Name Function
OPT
I/T
O/T
Description
General Purpose I/O. Register enabled pull-high resistor.
Internally connected to CREF pin on RF module.
Must be setup as an input for interfacing to RF module.
Not available on package.
PB0
PBPU
ST
CMOS
PB0/CREF
RF Transmitter generated pulses for synchronisation.
Connected internally to PB0. Not available on package.
CREF
¾
¾
¾
Rev. 1.30
6
November 23, 2010
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
