Owner manual
Table Of Contents
- Features
- Description
- Pin Configuration
- Pin Description: RF Part
- Pin Description: Microcontroller Part
- UHF ASK/FSK Transmitter Block
- Features
- Description
- General Description
- Functional Description
- Absolute Maximum Ratings
- Thermal Resistance
- Electrical Characteristics
- Microcontroller Block
- Features
- Description
- Introduction
- Microcontroller Architecture General Description
- Components of Microcontroller Core
- Master Reset
- Voltage Monitor
- Clock Generation
- Power-down Modes
- Peripheral Modules
- Bi-directional Ports
- Timer 3
- Features
- Timer/Counter Modes
- Timer 3 – Mode 1: Timer/Counter
- Timer 3 – Mode 2: Timer/Counter, External Trigger Restart and External Capture (with T3I Input)
- Timer 3 – Mode 3: Timer/Counter, Internal Trigger Restart and Internal Capture (with TOG2)
- Timer 3 – Mode 4: Timer/Counter
- Timer 3 – Mode 5: Timer/Counter, External Trigger Restart and External Capture (with T3I Input)
- Timer 3 Modulator/Demodulator Modes
- Timer 3 – Mode 6: Carrier Frequency Burst Modulation Controlled by Timer 2 Output Toggle FlipFlo...
- Timer 3 – Mode 7: Carrier Frequency Burst Modulation Controlled by SSI Internal Output (SO)
- Timer 3 – Mode 8: FSK Modulation with Shift Register Data (SO)
- Timer 3 – Mode 9: Pulse-width Modulation with the Shift Register
- Timer 3 – Mode 10: Manchester Demodulation/Pulse-width Demodulation
- Timer 3 – Mode 11: Biphase Demodulation
- Timer 3 – Mode 12: Timer/Counter with External Capture Mode (T3I)
- Timer 3 Modulator for Carrier Frequency Burst Modulation
- Timer 3 Demodulator for Biphase, Manchester and Pulse-width-modulated Signals
- Timer 3 Registers
- Timer 3 Mode Register (T3M)
- Timer 3 Control Register 1 (T3C) Write
- Timer 3 Status Register 1 (T3ST) Read
- Timer 3 Clock Select Register (T3CS)
- Timer 3 Compare- and Compare-mode Register
- Timer 3 Compare-Mode Register 1 (T3CM1)
- Timer 3 Compare Mode Register 2 (T3CM2)
- Timer 3 COmpare Register 1 (T3CO1) Byte Write
- Timer 3 COmpare Register 2 (T3CO2) Byte Write
- Timer 3 Capture Register
- Synchronous Serial Interface (SSI)
- Serial Interface Registers
- Combination Modes
- Absolute Maximum Ratings
- Thermal Resistance
- DC Operating Characteristics
- AC Characteristics
- Crystal Characteristics
- Ordering Information
- Package Information
- Table of Contents
26
T48C862-R8
4590B–4BMCU–02/03
Figure 21. RC-oscillator 1
External Input Clock The OSC1 or OSC2 (mask option) can be driven by an external clock source provided it
meets the specified duty cycle, rise and fall times and input levels. Additionally, the
external clock stage contains a supervisory circuit for the input clock. The supervisor
function is controlled via the OS1, OS0-bit in the SC-register and the CCS-bit in the CM-
register. If the external input clock is missing for more than 1 ms and CCS = 0 is set in
the CM-register, the supervisory circuit generates a hardware reset.
Figure 22. External Input Clock
RC-oscillator 2 with External
Trimming Resistor
The RC-oscillator 2 is a high resolution trimmable oscillator whereby the oscillator fre-
quency can be trimmed with an external resistor between OSC1 and V
DD
. In this
configuration, the RC-oscillator 2 frequency can be maintained stable with a tolerance of
±10% over the full operating temperature and a voltage range V
DD
from 2.5 V to 6.0 V.
For example:
An output frequency at the RC-oscillator 2 of 2 MHz can be obtained by connecting a
resistor R
ext
= 360 kW (see Figure 23).
RC
oscillator 1
RcOut1
Stop
Control
RcOut1
Osc-Stop
OS1 OS0 CCS Supervisor Reset Output (Res)
110 Enable
111 Disable
x 0 x Disable
Ext. input clock
ExOut
Stop
Ext.
Clock
RcOut1
Osc-Stop
ExIn
CCS
Res
OSC1
OSC2
Clock monitor
Ext.
Clock
or