ATAM894X-TNQY ATMEL [ATMEL Corporation], ATAM894X-TNQY Datasheet - Page 31

• Manufacturer Part Number: ATAM894X-TNQY
• Description: 8k-flash Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

6.3
4679D–4BMCU–05/05
Universal Timer/Counter/ Communication Module (UTCM)
The Universal Timer/counter/Communication Module (UTCM) consists of three timers
(Timer 1,Timer 2, Timer 3) and a Synchronous Serial Interface (SSI).
There is a multitude of modes in which the timers and the serial interface can work together.
Figure 6-7.
• Timer 1 is an interval timer that can be used to generate periodic interrupts and as prescaler
• Timer 2 is an 8/12-bit timer with an external clock input (T2I) and an output (T2O).
• Timer 3 is an 8-bit timer/counter with its own input (T3I) and output (T3O).
• The SSI operates as a two-wire serial interface or as shift register for modulation and
for Timer 2, Timer 3, the serial interface and the watchdog function.
demodulation. The modulator and demodulator units work together with the timers and shift
the data bits into or out of the shift register.
T3I
T2I
SYSCL
UTCM Block Diagram
SUBCL
T1OUT
TOG3
POUT
TOG2
from clock module
MUX
MUX
MUX
MUX
MUX
DCG
Capture 3
8-bit Counter 3
Compare 3/1
Compare 3/2
Receive buffer
Transmit buffer
8-bit shift register
4-bit Counter 2/1
Compare 2/1
8-bit Counter 2/2
Compare 2/2
Timer 1
Timer 3
Timer 2
Interval/Prescaler
Control
SSI
Watchdog
Control
Demodu-
Control
Modu-
Modu-
lator 3
lator 3
lator 2
SCL
I/O bus
NRST
INT2
INT5
INT4
INT3
ATAM894
T3O
T2O
SC
SD
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