|
|
PDF HT46R01T3 Data sheet ( Hoja de datos )
| Número de pieza | HT46R01T3 | |
| Descripción | 8-Bit OTP MCU | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de HT46R01T3 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
HT46R01T3/HT48R01T3
8-Bit OTP MCU with RF Transmitter
Features
MCU Features
· MCU Operating voltage:
fSYS= 4MHz: 2.2V~3.6V
fSYS= 8MHz: 3.0V~3.6V
· Power Down modes and wake-up functions to reduce power consumption
· Oscillator types
- External high frequency Crystal
- External RC
- Internal RC
- External low frequency crystal
- Watchdog Timer Internal RC Oscillator
· Three operational modes: Normal, Slow, Sleep
· Fully integrated internal 4MHz, 8MHz oscillator requires no external components
· OTP Program Memory: 1K´15
· RAM Data Memory: 96´8
· Watchdog Timer function
· All instructions executed in one or two instruction cycles
· Table read instructions
· 63 powerful instructions
· 6-level subroutine nesting
· Bit manipulation instruction
· Low voltage reset function
· 16-pin NSOP package type
· Up to 8 bidirectional I/O lines
· 4 channel 12-bit ADC
· 1 channel 8-bit PWM
· External interrupt input shared with an I/O line
· Two 8-bit programmable Timer/Event Counter with overflow interrupt and prescaler
· Time-Base function
· Programmable Frequency Divider - PFD
RF Transmitter Features
· Complete UHF ASK/OOK transmitter
· Frequency range 300MHz to 450MHz
· Data rates more than 10k bps
· Output Power up to 10dBm
· Low voltage operation - down to 2.2V
· Data tracking function for power saving
· Reference clock output for MCU IRC clock synchronisation
Rev. 1.30
1 November 23, 2010
1 page  
HT46R01T3/HT48R01T3
8-Bit OTP MCU with RF Transmitter
Pin Name
PB1/DOUT
Function OPT I/T O/T
Description
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.
DOUT ¾
¾
¾
Data output from MCU to RF module
Connected internally to PB1
PAOUT
PAOUT ¾
¾ NSO RF power amplifier output
XOUT
XOUT ¾ ¾ HXT RF chip crystal pin
XIN XIN ¾ HXT ¾ RF chip crystal pin
VDD
VDD
¾ PWR ¾ MCU power supply
VSS
VSS
¾ PWR ¾ MCU ground
AVDD
AVDD
¾ PWR ¾ RF chip power supply
AVSS
AVSS
¾ PWR ¾ 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
HT48R01T3
Pin Name
PA0
PA1/PFD
PA2/TMR0
PA3/INT
PA4/TMR1
PA5/OSC2
PA6/OSC1
Function OPT
PA0
PAPU
PAWK
PA1
PAPU
PAWK
PFD CTRL0
PA2
PAPU
PAWK
TC0 ¾
PA3
PAPU
PAWK
INT ¾
PA4
PAPU
PAWK
TC1 ¾
PA5
PAPU
PAWK
OSC2
CO
PA6
PAPU
PAWK
OSC1
CO
I/T
ST
ST
¾
ST
ST
ST
ST
ST
ST
ST
¾
ST
OSC
O/T Description
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS PFD output
CMOS General purpose I/O. Register enabled pull-up and wake-up.
¾ External Timer 0 clock input
CMOS General purpose I/O. Register enabled pull-up and wake-up.
¾ External interrupt input
CMOS General purpose I/O. Register enabled pull-up and wake-up.
¾ External Timer 1 clock input
CMOS General purpose I/O. Register enabled pull-up and wake-up.
OSC Oscillator pin
CMOS General purpose I/O. Register enabled pull-up and wake-up.
¾ Oscillator pin
Rev. 1.30
5 November 23, 2010
5 Page 
HT46R01T3/HT48R01T3
8-Bit OTP MCU with RF Transmitter
Absolute Maximum Ratings
The Absolute Maximum Ratings must be checked for discrepancies and the necessary care taken in
device handling and usage.
Power Supply
Examination of the block diagram will reveal that the Power Supply and Ground pins of the RF
Transmitter and MCU are independent and must be connected together if they are to share the same
power supply. If the same power supply is to be used for both chips then care must be taken as both
have different power supply requirements.
When calculating the total current consumption of the device, the internal DC specification currents
for the MCU and RF parts must be added together.
The RF data to be transmitted is derived from the PB1 line. When the PB1 line is high the device will
transmit allowing users to program their encoded data on this line. If the RF transmitter is in its
standby mode then there will be a delay of about 500ms before transmission begins. When the device
is transmitting, a synchronising signal will be generated on the CREF/PB0 pin which allows the
MCU to use it to calibrate its internal RC oscillator. To avoid the RF circuits entering an unknown
state, pin PB1 should be setup as an output as soon as possible after power-on.
To minimise power consumption, only when PB1 is high, can the RF signal be transmitted and the
reference clock on PB0 be generated. If no data transitions are generated on PB1 for 300~500ms, the
transmitter will enter a standby state and the RF circuits will be switched off along with the internal
PLL to save power. The signal generated on the CREF/PB0 line will also remain at a low level. The
internal PLL function is used to generate the RF frequency with a multiplier of 32 times the crystal
frequency. The relationship is: RF frequency = 32 ´ Crystal frequency. Therefore a 9.84375MHz
crystal will generate an RF frequency of 315MHz and a13.56MHz crystal will generate an RF
frequency of 433.92MHz. All PLL circuits are contained within the device and the only external
component required is a suitable crystal.
Power Down and Wake up
It is important to note that if the MCU is powered down or placed into a low power mode to conserve
power, that the RF Transmitter may continue running and will consume a certain amount of power.
Before powering down the MCU it is important to carefully manage the PB1 pin to ensure the
RF-Transmitter enters its power down state.
Programming Considerations
As MCU lines PB0 and PB1 are used to control the RF transmitter function, care must be taken to
manage these lines correctly in the application program. As line PB1 is used to send data to the RF
circuitry this line must be setup as an output. To avoid erroneous operation of the RF circuits this line
should be setup as an output immediately after power-on. The PB0 pin on the MCU is used to receive
synchronising pulses from the RF circuits and should therefore be setup as an input.
As the MCU will be powered down independently of the RF Transmitter Peripheral Module, care must
be taken to ensure that the MCU first clears its PB1 line to zero before powering down. This will allow
the RF Transmitter Peripheral Module to enter its standby state and thus keep power consumption to a
minimum.
Rev. 1.30
11 November 23, 2010
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet HT46R01T3.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HT46R01T3 | 8-Bit OTP MCU | Holtek Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |