ATA6020N ATMEL Corporation, ATA6020N Datasheet - Page 32

• Manufacturer Part Number: ATA6020N
• Description: Low-current Microcontroller For Watchdog Function
• Manufacturer: ATMEL Corporation

Figure 5-9.
5.2.6.1
Figure 5-10. 12-bit Compare Counter
32
T1OUT
T2I
SYSCL
CL2/1
SCL
ATA6020N
Timer 2 Modes
Timer 2
T2C
4-bit compare
4-bit counter
4-bit register
CL2/1
Mode 1: 12-bit Compare Counter
The 4-bit stage and the 8-bit stage work together as a 12-bit compare counter. A compare match
signal of the 4-bit and the 8-bit stage generates the signal for the counter reset, toggle flip-flop or
interrupt. The compare action is programmable via the compare mode register (T2CM). The 4-
bit counter overflow (OVF1) supplies the clock output (POUT) with clocks. The duty cycle gener-
ator (DCG) has to be bypassed in this mode.
RES
RES
4-bit Counter 2/1
Compare 2/1
CM1
T2CO1
T2D1, 0
DCG
POUT (CL2/1 /16)
P4CR
OVF1
CM1
SSI POUT
8-bit compare
8-bit counter
8-bit register
POUT
I/O-bus
Control
CL2/2
T2M1
T2CM
RES
OVF2
CM2
DCG
T2RM
RES
8-bit Counter 2/2
T2OTM
Compare 2/2
T2CO2
and T2OTM-bit
output mode
DCGO
I/O-bus
OVF2
Timer 2
TOG2
INT4
SSI
T2IM
SO
MOUT
Manchester
Modulator
OUTPUT
T2CTM
Bi-phase
T2M2
SSI
Control
M2
Modulator 3
output-stage
modulator
4708D–4BMCU–09/05
Timer 2
TOG2
INT4
to
T2O