AT90S1200-4YI Atmel, AT90S1200-4YI Datasheet - Page 35

• Manufacturer Part Number: AT90S1200-4YI
• Description: IC MCU 1K FLSH 4MHZ LV IT 20SSOP
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S1200-4YI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI
• Peripherals: POR, WDT
• Number Of I /o: 15
• Program Memory Size: 1KB (512 x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Ram Size: -
• Data Converters: -

Alternate Functions for Port D
Port D Schematics
0838H–AVR–03/02
Table 11. DDDn Bits’ Effect on Port D Pins
Note:
The alternate functions of Port D are:
• T0 – Port D, Bit 4
T0, Timer/Counter0 clock source. See the timer description for further details.
• INT0 – Port D, Bit 2
INT0, External Interrupt source 0. See the interrupt description for further details.
Note that all port pins are synchronized. The synchronization latches are, however, not
shown in the figures.
Figure 27. Port D Schematic Diagram (Pins PD0, PD1, PD3, PD5, and PD6)
DDDn
0
0
1
1
n: 6…0, pin number.
PORTDn
0
1
0
1
Output
Output
Input
Input
I/O
Pull-up
Yes
No
No
No
Comment
Tri-state (High-Z)
PDn will source current if ext. pulled low.
Push-pull Zero Output
Push-pull One Output
AT90S1200
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