AT89C51AC3-RLTIM Atmel, AT89C51AC3-RLTIM Datasheet - Page 68
AT89C51AC3-RLTIM
Manufacturer Part Number
AT89C51AC3-RLTIM
Description
IC 8051 MCU FLASH 64K 44VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51AC3-RLTUM.pdf
(140 pages)
Specifications of AT89C51AC3-RLTIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
36
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 68 of 140
- Download datasheet (2Mb)
Mode 2 (8-bit Timer with Auto-
Reload)
Figure 37. Timer/Counter x (x = 0 or 1) in Mode 2
Mode 3 (Two 8-bit Timers)
Figure 38. Timer/Counter 0 in Mode 3: Two 8-bit Counters
68
INT0#
See the “Clock” section
See the “Clock” section
INTx#
AT89C51AC3
CLOCK
CLOCK
CLOCK
T0
FTx
Tx
FTx
FTx
TMOD reg
GATEx
GATE0
TMOD.3
÷ 6
÷ 6
÷ 6
TMOD reg
TMOD.2
C/T0#
C/Tx#
Mode 2 configures Timer 0 as an 8-bit Timer (TL0 register) that automatically reloads
from TH0 register (see Figure 37). TL0 overflow sets TF0 flag in TCON register and
reloads TL0 with the contents of TH0, which is preset by software. When the interrupt
request is serviced, hardware clears TF0. The reload leaves TH0 unchanged. The next
reload value may be changed at any time by writing it to TH0 register.
Mode 3 configures Timer 0 such that registers TL0 and TH0 operate as separate 8-bit
Timers (see Figure 38). This mode is provided for applications requiring an additional 8-
bit Timer or Counter. TL0 uses the Timer 0 control bits C/T0# and GATE0 in TMOD reg-
ister, and TR0 and TF0 in TCON register in the normal manner. TH0 is locked into a
Timer function (counting F
run control (TR1) bits. Thus, operation of Timer 1 is restricted when Timer 0 is in mode
3.
0
1
0
1
TCON reg
TCON.4
TR0
TRx
TCON.6
TR1
PER
/6) and takes over use of the Timer 1 interrupt (TF1) and
(8 bits)
(8 bits)
(8 bits)
(8 bits)
TH0
THx
TLx
TL0
Overflow
Overflow
Overflow
TCON reg
TCON.5
TCON.7
TFx
TF0
TF1
4383D–8051–02/08
Timer x
Interrupt
Request
Timer 0
Interrupt
Request
Timer 1
Interrupt
Request
Related parts for AT89C51AC3-RLTIM
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
At89c51ac3 Enhanced 8-bit Microcontroller With 64kb Flash Memory
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 64K 44VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 64K 64VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 64K 44PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU 64K FLASH 52-PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 64K 64VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 64K 44PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 44TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 44PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 44PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 40DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 24MHZ 40DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
8-bit microcontroller with 4K bytes flash, 5V, 20MHz
Manufacturer:
ATMEL Corporation
Datasheet: