参数资料
型号: ATMEGA103-6AI
厂商: Atmel
文件页数: 136/141页
文件大小: 0K
描述: IC MCU 128K 6MHZ A/D IT 64TQFP
产品培训模块: megaAVR Introduction
标准包装: 90
系列: AVR® ATmega
核心处理器: AVR
芯体尺寸: 8-位
速度: 6MHz
连通性: SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 128KB(64K x 16)
程序存储器类型: 闪存
EEPROM 大小: 4K x 8
RAM 容量: 4K x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 64-TQFP
包装: 托盘
配用: ATSTK501-ND - ADAPTER KIT FOR 64PIN AVR MCU
94
ATmega103(L)
0945I–AVR–02/07
Port C
Port C is an 8-bit output port.
The Port C pins have alternate functions related to the optional external data SRAM.
When using the device with external SRAM, Port C outputs the high-order address byte
during accesses to external Data memory. When a reset condition becomes active, the
port pins are not tri-stated, but the pins will assume their initial value after two stable
clock cycles.
The Port C Data Register –
PORTC
Port C Schematics
Figure 61. Port C Schematic Diagram (Pins PC0 - PC7)
Port D
Port D is an 8-bit bi-directional I/O port with internal pull-up resistors.
Three I/O memory address locations are allocated for the Port D, one each for the Data
Register – PORTD, $12($32), Data Direction Register – DDRD, $11($31) and the Port D
Input Pins – PIND, $10($30). The Port D Input Pins address is read-only, while the Data
Register and the Data Direction Register are read/write.
The Port D output buffers can sink 20 mA. As inputs, Port D pins that are externally
pulled low will source current if the pull-up resistors are activated.
Some Port D pins have alternate functions as shown in Table 31.
Bit
76543210
$15 ($35)
PORTC7
PORTC6
PORTC5
PORTC4
PORTC3
PORTC2
PORTC1
PORTC0
PORTC
Read/Write
R/W
Initial Value
00000000
DA
T
A
B
US
D
Q
RESET
C
WP
PCn
R
WP:
RL:
A:
SRE:
n:
WRITE PORTC
READ PORTC LATCH
SRAM ADDRESS
EXTERNAL SRAM ENABLE
0-7
PORTCn
SRE
An
RL
Table 31. Port D Pin Alternate Functions
Port Pin
Alternate Function
PD0
INT0 (External Interrupt0 Input)
PD1
INT1 (External Interrupt1 Input)
PD2
INT2 (External Interrupt2 Input)
PD3
INT3 (External Interrupt3 Input)
PD4
IC1 (Timer/Counter1 Input Capture Trigger)
PD6
T1 (Timer/Counter1 Clock Input)
PD7
T2 (Timer/Counter2 Clock Input)
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