AT89LP3240 Atmel Corporation, AT89LP3240 Datasheet - Page 55
AT89LP3240
Manufacturer Part Number
AT89LP3240
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT89LP3240.pdf
(200 pages)
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
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Table 11-3.
3706C–MICRO–2/11
TMOD Address = 089H
Not Bit Addressable
Symbol
GATE1
C/T1
T1M1
T1M0
GATE0
C/T0
T0M1
T0M0
Bit
GATE1
Function
Timer 1 Gating Control. When set, Timer/Counter 1 is enabled only while INT1 pin is high and TR1 control pin is set.
When cleared, Timer 1 is enabled whenever TR1 control bit is set.
Timer or Counter Selector 1. Cleared for Timer operation (input from internal system clock). Set for Counter operation
(input from T1 input pin). C/T1 must be zero when using Timer 1 in PWM mode.
Timer 1 Operating Mode
Mode
0
1
2
3
Timer 0 Gating Control. When set, Timer/Counter 0 is enabled only while INT0 pin is high and TR0 control pin is set.
When cleared, Timer 0 is enabled whenever TR0 control bit is set.
Timer or Counter Selector 0. Cleared for Timer operation (input from internal system clock). Set for Counter operation
(input from T0 input pin). C/T0 must be zero when using Timer 0 in PWM mode.
Timer 0 Operating Mode
Mode
0
1
2
3
7
TMOD – Timer/Counter Mode Control Register
T1M1
0
0
1
1
T0M1
0
0
1
1
C/T1
6
T1M0
0
1
0
1
T0M0
0
1
0
1
T1M1
5
Operation
Variable 9–16-bit Timer Mode. 8-bit Timer/Counter TH1 with TL1 as 1–8-bit prescaler.
16-bit Auto-Reload Mode. TH1 and TL1 are cascaded to form a 16-bit Timer/Counter
that is reloaded with RH1 and RL1 each time it overflows.
8-bit Auto Reload Mode. TH1 holds a value which is reloaded into 8-bit Timer/Counter
TL1 each time it overflows.
Timer/Counter 1 is stopped
Operation
Variable 9–16-bit Timer Mode. 8-bit Timer/Counter TH0 with TL0 as 1–8-bit prescaler.
16-bit Auto-Reload Mode. TH0 and TL0 are cascaded to form a 16-bit Timer/Counter
that is reloaded with RH0 and RL0 each time it overflows.
8-bit Auto Reload Mode. TH0 holds a value which is reloaded into 8-bit Timer/Counter
TL0 each time it overflows.
Split Timer Mode. TL0 is an 8-bit Timer/Counter controlled by the standard Timer 0
control bits. TH0 is an 8-bit timer only controlled by Timer 1 control bits.
T1M0
4
GATE0
3
C/T0
2
AT89LP3240/6440
Reset Value = 0000 0000B
T0M0
1
T0M1
0
55
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