AT89LP2052 Atmel Corporation, AT89LP2052 Datasheet - Page 50

• Manufacturer Part Number: AT89LP2052
• Manufacturer: Atmel Corporation

Specifications of AT89LP2052

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 15
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.25
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 2
• Isp: SPI
• Watchdog: Yes

Table 20-1.
50
Symbol
CIDL
CF
CEN
CM [2:0]
ACSR = 97H
Not Bit Addressable
Bit
AT89LP2052/LP4052
Comparator Interrupt Mode
Function
Comparator Idle Enable. If CIDL = 1 the comparator will continue to operate during Idle mode. If CIDL = 0 the
comparator is powered down during Idle mode. The comparator is always shut down during Power-down mode.
Comparator Interrupt Flag. Set when the comparator output meets the conditions specified by the CM [2:0] bits and CEN
is set. The flag must be cleared by software. The interrupt may be enabled/disabled by setting/clearing bit 6 of IE.
Comparator Enable. Set this bit to enable the comparator. Clearing this bit will force the comparator output low and
prevent further events from setting CF.
ACSR
2
0
0
0
0
1
1
1
1
–
7
1
0
0
1
1
0
0
1
1
– Analog Comparator Control & Status Register
0
0
1
0
1
0
1
0
1
Interrupt Mode
Negative (Low) level
Positive edge
Toggle with debounce
Positive edge with debounce
Negative edge
Toggle
Negative edge with debounce
Positive (High) level
–
6
CIDL
5
CF
4
CEN
3
CM2
2
Reset Value = XXX0 0000B
CM1
1
3547J–MICRO–10/09
CM0
0