User guide
Table Of Contents
- Features
- Pin Configurations
- Overview
- AVR CPU Core
- AVR ATmega162 Memories
- System Clock and Clock Options
- Power Management and Sleep Modes
- System Control and Reset
- Interrupts
- I/O-Ports
- Introduction
- Ports as General Digital I/O
- Alternate Port Functions
- Register Description for I/O-Ports
- Port A Data Register – PORTA
- Port A Data Direction Register – DDRA
- Port A Input Pins Address – PINA
- Port B Data Register – PORTB
- Port B Data Direction Register – DDRB
- Port B Input Pins Address – PINB
- Port C Data Register – PORTC
- Port C Data Direction Register – DDRC
- Port C Input Pins Address – PINC
- Port D Data Register – PORTD
- Port D Data Direction Register – DDRD
- Port D Input Pins Address – PIND
- Port E Data Register – PORTE
- Port E Data Direction Register – DDRE
- Port E Input Pins Address – PINE
- External Interrupts
- 8-bit Timer/Counter0 with PWM
- Timer/Counter0, Timer/Counter1, and Timer/Counter3 Prescalers
- 16-bit Timer/Counter (Timer/Counter1 and Timer/Counter3)
- Restriction in ATmega161 Compatibility Mode
- Overview
- Accessing 16-bit Registers
- Timer/Counter Clock Sources
- Counter Unit
- Input Capture Unit
- Output Compare Units
- Compare Match Output Unit
- Modes of Operation
- Timer/Counter Timing Diagrams
- 16-bit Timer/Counter Register Description
- Timer/Counter1 Control Register A – TCCR1A
- Timer/Counter3 Control Register A – TCCR3A
- Timer/Counter1 Control Register B – TCCR1B
- Timer/Counter3 Control Register B – TCCR3B
- Timer/Counter1 – TCNT1H and TCNT1L
- Timer/Counter3 – TCNT3H and TCNT3L
- Output Compare Register 1 A – OCR1AH and OCR1AL
- Output Compare Register 1 B – OCR1BH and OCR1BL
- Output Compare Register 3 A – OCR3AH and OCR3AL
- Output Compare Register 3 B – OCR3BH and OCR3BL
- Input Capture Register 1 – ICR1H and ICR1L
- Input Capture Register 3 – ICR3H and ICR3L
- Timer/Counter Interrupt Mask Register – TIMSK(1)
- Extended Timer/Counter Interrupt Mask Register – ETIMSK(1)
- Timer/Counter Interrupt Flag Register – TIFR(1)
- Extended Timer/Counter Interrupt Flag Register – ETIFR(1)
- 8-bit Timer/Counter2 with PWM and Asynchronous operation
- Serial Peripheral Interface – SPI
- USART
- Analog Comparator
- JTAG Interface and On-chip Debug System
- IEEE 1149.1 (JTAG) Boundary-scan
- Boot Loader Support – Read-While-Write Self-programming
- Features
- Application and Boot Loader Flash Sections
- Read-While-Write and No Read-While-Write Flash Sections
- Boot Loader Lock Bits
- Entering the Boot Loader Program
- Addressing the Flash During Self- programming
- Self-programming the Flash
- Performing Page Erase by SPM
- Filling the Temporary Buffer (Page Loading)
- Performing a Page Write
- Using the SPM Interrupt
- Consideration while Updating BLS
- Prevent Reading the RWW Section During Self- programming
- Setting the Boot Loader Lock Bits by SPM
- EEPROM Write Prevents Writing to SPMCR
- Reading the Fuse and Lock Bits from Software
- Preventing Flash Corruption
- Programming Time for Flash When Using SPM
- Simple Assembly Code Example for a Boot Loader
- ATmega162 Boot Loader Parameters
- Memory Programming
- Program And Data Memory Lock Bits
- Fuse Bits
- Signature Bytes
- Calibration Byte
- Parallel Programming Parameters, Pin Mapping, and Commands
- Parallel Programming
- Enter Programming Mode
- Considerations for Efficient Programming
- Chip Erase
- Programming the Flash
- Programming the EEPROM
- Reading the Flash
- Reading the EEPROM
- Programming the Fuse Low Bits
- Programming the Fuse High Bits
- Programming the Extended Fuse Bits
- Programming the Lock Bits
- Reading the Fuse and Lock Bits
- Reading the Signature Bytes
- Reading the Calibration Byte
- Parallel Programming Characteristics
- Serial Downloading
- SPI Serial Programming Pin Mapping
- Programming via the JTAG Interface
- Programming Specific JTAG Instructions
- AVR_RESET (0xC)
- PROG_ENABLE (0x4)
- PROG_COMMANDS (0x5)
- PROG_PAGELOAD (0x6)
- PROG_PAGEREAD (0x7)
- Data Registers
- Reset Register
- Programming Enable Register
- Programming Command Register
- Virtual Flash Page Load Register
- Virtual Flash Page Read Register
- Programming Algorithm
- Entering Programming Mode
- Leaving Programming Mode
- Performing Chip Erase
- Programming the Flash
- Reading the Flash
- Programming the EEPROM
- Reading the EEPROM
- Programming the Fuses
- Programming the Lock Bits
- Reading the Fuses and Lock Bits
- Reading the Signature Bytes
- Reading the Calibration Byte
- Electrical Characteristics
- ATmega162 Typical Characteristics
- Active Supply Current
- Idle Supply Current
- Power-down Supply Current
- Power-save Supply Current
- Standby Supply Current
- Pin Pull-up
- Pin Driver Strength
- Pin Thresholds and Hysteresis
- BOD Thresholds and Analog Comparator Offset
- Internal Oscillator Speed
- Current Consumption of Peripheral Units
- Current Consumption in Reset and Reset Pulsewidth
- Register Summary
- Instruction Set Summary
- Ordering Information
- Packaging Information
- Erratas
- Datasheet Change Log for ATmega162
- Table of Contents
263
ATmega162/V
2513E–AVR–09/03
Electrical Characteristics
DC Characteristics
Absolute Maximum Ratings*
Operating Temperature.................................. -55°C to +125°C
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Storage Temperature ..................................... -65°C to +150°C
Voltage on any Pin except RESET
with respect to Ground ................................-0.5V to V
CC
+0.5V
Voltage on RESET with respect to Ground......-0.5V to +13.0V
Maximum Operating Voltage ............................................ 6.0V
DC Current per I/O Pin ............................................... 40.0 mA
DC Current V
CC
and GND Pins................................ 200.0 mA
T
A
= -40°C to 85°C, V
CC
= 1.8V to 5.5V (unless otherwise noted)
Symbol Parameter Condition Min. Typ. Max. Units
V
IL
Input Low Voltage, Except XTAL1 pin
V
CC
= 1.8 - 2.4V
V
CC
= 2.4 - 5.5V
-0.5
-0.5
0.2 V
CC
(1)
0.3 V
CC
(1)
V
V
IL1
Input Low Voltage, XTAL1 pin V
CC
= 1.8 - 5.5V -0.5 0.1 V
CC
(1)
V
V
IH
Input High Voltage, Except XTAL1
and RESET pin
V
CC
= 1.8 - 2.4V
V
CC
= 2.4 - 5.5V
0.7 V
CC
(2)
0.6 V
CC
(2)
V
CC
+ 0.5
V
CC
+ 0.5
V
V
IH1
Input High Voltage, XTAL1 pin
V
CC
= 1.8 - 2.4V
V
CC
= 2.4 - 5.5V
0.8 V
CC
(2)
0.7 V
CC
(2)
V
CC
+ 0.5
V
CC
+ 0.5
V
V
IH2
Input High Voltage, RESET pin V
CC
= 1.8 - 5.5V 0.9 V
CC
(2)
V
CC
+ 0.5 V
V
OL
Output Low Voltage
(3)
, Ports A, B, C,
D, and E
I
OL
= 20 mA, V
CC
= 5V
I
OL
= 10 mA, V
CC
= 3V
0.7
0.5
V
V
V
OH
Output High Voltage
(4)
, Ports A, B, C,
D, and E
I
OL
= -20 mA, V
CC
= 5V
I
OL
= -5 mA, V
CC
= 3V
4.2
2.3
V
V
I
IL
Input Leakage Current I/O Pin
Vcc = 5.5V, pin low
(absolute value)
1µA
I
IH
Input Leakage Current I/O Pin
Vcc = 5.5V, pin high
(absolute value)
1µA
R
RST
Reset Pull-up Resistor 30 60 kΩ
R
pu
I/O Pin Pull-up Resistor 20 50 kΩ