AT89C51CC02 Atmel Corporation, AT89C51CC02 Datasheet - Page 59
AT89C51CC02
Manufacturer Part Number
AT89C51CC02
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C51CC02.pdf
(7 pages)
2.AT89C51CC02.pdf
(159 pages)
3.AT89C51CC02.pdf
(33 pages)
4.AT89C51CC02.pdf
(29 pages)
Specifications of AT89C51CC02
Flash (kbytes)
16 Kbytes
Max. Operating Frequency
40 MHz
Cpu
8051-12C
Max I/o Pins
20
Uart
1
Can
1
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
62.5
Sram (kbytes)
0.5
Eeprom (bytes)
2048
Self Program Memory
API
Operating Voltage (vcc)
3.0 to 5.5
Timers
4
Isp
UART/CAN
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51CC02CA-SISUM
Manufacturer:
Atmel
Quantity:
972
Part Number:
AT89C51CC02CA-SISUM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89C51CC02CA-TISUM
Manufacturer:
Atmel
Quantity:
1 492
Company:
Part Number:
AT89C51CC02CA-UM
Manufacturer:
AD
Quantity:
10
Company:
Part Number:
AT89C51CC02UA-RATUM
Manufacturer:
Atmel
Quantity:
1 845
Company:
Part Number:
AT89C51CC02UA-UM
Manufacturer:
NEDI
Quantity:
4
Figure 26. Timer/Counter x (x= 0 or 1) in Mode 2
Mode 3 (Two 8-bit Timers)
Figure 27. Timer/Counter 0 in Mode 3: Two 8-bit Counters
Timer 1
4126L–CAN–01/08
See section “Clock”
See section “Clock”
INT0#
INTx#
CLOCK
CLOCK
CLOCK
T0
FTx
Tx
FTx
FTx
TMOD Reg
GATEx
GATE0
TMOD.3
÷ 6
÷ 6
÷ 6
TMOD Reg
TMOD.2
C/Tx#
C/T0#
Mode 3 configures Timer 0 such that registers TL0 and TH0 operate as separate 8-bit
Timers (See Figure 27). 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.
Timer 1 is identical to Timer 0 excepted for Mode 3 which is a hold-count mode. Follow-
ing comments help to understand the differences:
•
•
•
0
1
0
1
TCON Reg
TCON.4
TRx
TR0
Timer 1 functions as either a Timer or event Counter in three modes of operation.
Figure 24 to Figure 26 show the logical configuration for modes 0, 1, and 2. Timer
1’s mode 3 is a hold-count mode.
Timer 1 is controlled by the four high-order bits of TMOD register (See Figure 39)
and bits 2, 3, 6 and 7 of TCON register (See Figure 38). TMOD register selects the
method of Timer gating (GATE1), Timer or Counter operation (C/T1#) and mode of
operation (M11 and M01). TCON register provides Timer 1 control functions:
overflow flag (TF1), run control bit (TR1), interrupt flag (IE1) and interrupt type
control bit (IT1).
Timer 1 can serve as the Baud Rate Generator for the Serial Port. Mode 2 is best
suited for this purpose.
TCON.6
TR1
PER
/6) and takes over use of the Timer 1 interrupt (TF1) and
(8 bits)
(8 bits)
(8 bits)
(8 bits)
THx
TH0
TLx
TL0
Overflow
Overflow
Overflow
TCON Reg
AT/T89C51CC02
TCON.5
TCON.7
TFx
TF0
TF1
Timer x
Interrupt
Request
Timer 0
Interrupt
Request
Timer 1
Interrupt
Request
59