at83c5122 ATMEL Corporation, at83c5122 Datasheet - Page 149
at83c5122
Manufacturer Part Number
at83c5122
Description
At83c5123 C51 Microcontroller With Usb And Smart Card Reader Interfaces
Manufacturer
ATMEL Corporation
Datasheet
1.AT83C5122.pdf
(213 pages)
- Current page: 149 of 213
- Download datasheet (3Mb)
Mode 2 (8-bit Timer with Auto-
Reload)
4202E–SCR–06/06
INTx#
FCK_Tx
INTx#
FCK_Tx
Tx
Tx
TMOD reg
TMOD reg
GATEx
GATEx
/6
/6
Figure 92. Timer/Counter x (x = 0 or 1) in Mode 1
Figure 93. Mode 1 Overflow Period Formula
Mode 2 configures Timer 0 as an 8-bit Timer (TL0 register) that automatically reloads
from the TH0 register (see Figure 94). TL0 overflow sets the TF0 flag in the TCON reg-
ister and reloads TL0 with the contents of TH0, which is preset by the software. When
the interrupt request is serviced, the hardware clears TF0. The reload leaves TH0
unchanged. The next reload value may be changed at any time by writing it to the TH0
register.
Figure 95 gives the autoreload period calculation formula when in timer mode.
Figure 94. Timer/Counter x (x = 0 or 1) in Mode 2
Figure 95. Mode 2 Autoreload Period Formula
TFx
TFx
TMOD reg
PER
PER
C/Tx#
=
=
0
1
TCON reg
TCON reg
6 (256 – THx)
6
TRx
TRx
(65536 – (THx, TLx))
F
CK_Tx
TMOD reg
C/Tx#
F
0
1
CK_Tx
(8 bits)
THx
(8 bits)
(8 bits)
THx
TLx
(8 bits)
TLx
Overflow
Overflow
AT8xC5122/23
TCON reg
TCON reg
TFx
TFx
Timer x
Interrupt
Request
Timer x
Interrupt
Request
149
Related parts for at83c5122
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: