AT90S1200-4SC Atmel, AT90S1200-4SC Datasheet - Page 28

• Manufacturer Part Number: AT90S1200-4SC
• Description: MCU 1K ISP FLASH 4MHZ 20-SOIC
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S1200-4SC

• 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: 0°C ~ 70°C
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Ram Size: -
• Data Converters: -

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AT90S1200
• Bit 3 – ACIE: Analog Comparator Interrupt Enable
When the ACIE bit is set (one) and the I-bit in the Status Register is set (one), the Ana-
log Comparator Interrupt is activated. When cleared (zero), the interrupt is disabled.
• Bit 2 – Res: Reserved Bit
This bit is a reserved bit in the AT90S1200 and will always read as zero.
• Bits 1, 0 – ACIS1, ACIS0: Analog Comparator Interrupt Mode Select
These bits determine which comparator events trigger the Analog Comparator Interrupt.
The different settings are shown in Table 7.
Table 7. ACIS1/ACIS0 Settings
Note:
ACIS1
0
0
1
1
When changing the ACIS1/ACIS0 bits, the Analog Comparator Interrupt must be dis-
abled by clearing its Interrupt Enable bit in the ACSR register. Otherwise, an interrupt
can occur when the bits are changed.
ACIS0
0
1
0
1
Interrupt Mode
Comparator Interrupt on Output Toggle
Reserved
Comparator Interrupt on Falling Output Edge
Comparator Interrupt on Rising Output Edge
0838H–AVR–03/02