AT89LP3240 Atmel Corporation, AT89LP3240 Datasheet - Page 129

• Manufacturer Part Number: AT89LP3240
• Manufacturer: Atmel Corporation

Specifications of AT89LP3240

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 38
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 4.25
• Eeprom (bytes): 8192
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 3.6
• Timers: 3
• Isp: SPI/OCD
• Watchdog: Yes

Figure 19-4. Dual Comparator Configuration Examples
3706C–MICRO–2/11
a. dual independent comparators with external references
b. 3-channel comparator with external reference
c. 4-channel comparator with internal reference
d. 2-channel comparator with internal reference &
e. 2-channel comparator with external reference &
AIN0
AIN1
AIN0
AIN2
AIN3
AIN0
AIN1
AIN2
AIN3
comparator with external reference
AIN0
AIN1
comparator with internal reference
AIN0
AIN2
CSA = 00 RFA = 00
AIN1
CSA = 00/01 RFA = 10
CSA = 00/10 RFA = 00
V
+
-
AREF
A
CSA = 00/01/10/11 RFA = 10
AIN1
V
CSA = 00/10/11 RFA = 00
+
+
AREF
-
-
A
A
CMPA
CMPA
CMPA
+
+
-
-
A
A
AIN3
AIN2
CSB = 11 RFB = 00
AIN3
AIN2
AIN3
V
CSB = 11 RFB = 00
AREF
CSB = 11 RFB = 10
CMPA
CMPA
+
-
B
+
+
-
-
B
B
CMPB
CMPB
CMPB
AIN2
AIN0
AIN3
AIN1
AIN0
AIN1
AIN2
AIN3
f. 2-channel window
g. 4-channel window
comparator with
external reference
CSA = CSB = 00/01/10/11
comparator with
internal reference
V
V
RFA = 01 RFB = 11
CSA = CSB = 00/11
AREF+Δ
AREF-Δ
AT89LP3240/6440
RFA = RFB = 00
+
+
+
+
-
-
-
-
B
A
B
A
CMPB
CMPA
CMPB
CMPA
129