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ATMEGA162V-8MI 其他数据使用手册 - ATMEL（爱特美尔）
制造商:
ATMEL（爱特美尔）
分类:
微控制器
封装:
VFQFN-44
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P2P5P64Hot
原理图在P3P7P62P88P90P91P92P106P111P112P114P116
封装尺寸在P310P311P312
型号编码规则在P309P314P315
封装信息在P310P314
技术参数、封装参数在P314
应用领域在P30P31P40P46P58P60P216P219P230P231
电气规格在P62P314P315
导航目录
ATMEGA162V-8MI数据手册
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5
ATmega162/V
2513F–AVR–12/03
ATmega161 Compatibility
Mode
Programming the M161C will change the following functionality:
• The extended I/O map will be configured as internal RAM once the M161C Fuse is
programmed.
• The timed sequence for changing the Watchdog Time-out period is disabled. See
“Timed Sequences for Changing the Configuration of the Watchdog Timer” on page
55 for details.
• The double buffering of the USART Receive Registers is disabled. See “AVR
USART vs. AVR UART – Compatibility” on page 167 for details.
• Pin change interrupts are not supported (Control Registers are located in Extended
I/O).
• One 16 bits Timer/Counter (Timer/Counter1) only. Timer/Counter3 is not accessible.
Note that the shared UBRRHI Register in ATmega161 is split into two separate registers
in ATmega162, UBRR0H and UBRR1H. The location of these registers will not be
affected by the ATmega161 compatibility fuse.
Pin Descriptions
VCC Digital supply voltage
GND Ground
Port A (PA7..PA0) Port A is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each
bit). The Port A output buffers have symmetrical drive characteristics with both high sink
and source capability. When pins PA0 to PA7 are used as inputs and are externally
pulled low, they will source current if the internal pull-up resistors are activated. The Port
A pins are tri-stated when a reset condition becomes active, even if the clock is not
running.
Port A also serves the functions of various special features of the ATmega162 as listed
on page 71.
Port B (PB7..PB0) Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each
bit). The Port B output buffers have symmetrical drive characteristics with both high sink
and source capability. As inputs, Port B pins that are externally pulled low will source
current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset
condition becomes active, even if the clock is not running.
Port B also serves the functions of various special features of the ATmega162 as listed
on page 71.
Port C (PC7..PC0) Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each
bit). The Port C output buffers have symmetrical drive characteristics with both high sink
and source capability. As inputs, Port C pins that are externally pulled low will source
current if the pull-up resistors are activated. The Port C pins are tri-stated when a reset
condition becomes active, even if the clock is not running. If the JTAG interface is
enabled, the pull-up resistors on pins PC7(TDI), PC5(TMS) and PC4(TCK) will be acti-
vated even if a Reset occurs.
Port C also serves the functions of the JTAG interface and other special features of the
ATmega162 as listed on page 74.
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