AT90S4433-8AI Atmel, AT90S4433-8AI Datasheet - Page 81
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AT90S4433-8AI
Manufacturer Part Number
AT90S4433-8AI
Description
IC MCU 4K 8MHZ A/D IT 32TQFP
Manufacturer
Atmel
Series
AVR® 90Sr
Datasheet
1.AT90S4433-8AC.pdf
(126 pages)
Specifications of AT90S4433-8AI
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
20
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Data Converters
A/D 6x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90S4433-8AI
Manufacturer:
ATMEL
Quantity:
24
Company:
Part Number:
AT90S4433-8AI
Manufacturer:
ATMEL
Quantity:
30
Part Number:
AT90S4433-8AI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Port D as General Digital I/O
Alternate Functions of Port D
1042H–AVR–04/03
PDn, General I/O pin: The DDDn bit in the DDRD Register selects the direction of this
pin. If DDDn is set (one), PDn is configured as an output pin. If DDDn is cleared (zero),
PDn is configured as an input pin. If PDn is set (one) when configured as an input pin,
the MOS pull-up resistor is activated. To switch the pull-up resistor off, the PDn has to
be cleared (zero) or the pin has to be configured as an output pin.The port pins are tri-
stated when a reset condition becomes active, even if the clock is not running.
Table 27. DDDn Bits on Port D Pins
Note:
• AIN1 – Port D, Bit 7
AIN1, Analog Comparator Negative Input. When configured as an input (DDD7 is
cleared [zero]), and with the internal MOS pull-up resistor switched off (PD7 is cleared
[zero]), this pin also serves as the negative input of the On-chip Analog Comparator.
During Power-down mode, the Schmitt trigger of the digital input is disconnected. This
allows analog signals, which are close to V
out causing excessive power consumption.
• AIN0 – Port D, Bit 6
AIN0, Analog Comparator Positive Input. When configured as an input (DDD6 is cleared
[zero]), and with the internal MOS pull-up resistor switched off (PD6 is cleared [zero]),
this pin also serves as the positive input of the On-chip Analog Comparator. During
Power-down mode, the Schmitt trigger of the digital input is disconnected. This allows
analog signals, which are close to V
causing excessive power consumption.
• T1 – Port D, Bit 5
T1, Timer/Counter1 Counter Source. See the Timer description for further details
• T0 – Port D, Bit 4
T0: Timer/Counter0 Counter Source. See the Timer description for further details.
• INT1 – Port D, Bit 3
INT1, External Interrupt Source 1: The PD3 pin can serve as an external interrupt
source to the MCU. See the interrupt description for further details and how to enable
the source.
• INT0 – Port D, Bit 2
INT0, External Interrupt Source 0: The PD2 pin can serve as an external interrupt
source to the MCU. See the interrupt description for further details and how to enable
the source.
DDDn
0
0
1
1
1. n: 7,6..0, pin number.
PORTDn
0
1
0
1
Output
Output
Input
Input
I/O
Pull-up
Yes
No
No
No
(1)
CC
/2, to be present during Power-down without
CC
Comment
Tri-state (high-Z)
PDn will source current if ext. pulled low.
Push-pull Zero Output
Push-pull One Output
/2, to be present during Power-down with-
AT90S/LS4433
81