ATA5428-PLUW Atmel, ATA5428-PLUW Datasheet - Page 45

• Manufacturer Part Number: ATA5428-PLUW
• Manufacturer: Atmel

Specifications of ATA5428-PLUW

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 7mm
• Product Height (mm): 0.9mm
• Product Length (mm): 7mm
• Lead Free Status / Rohs Status: Compliant

4841D–WIRE–10/07
If the transceiver is in any active mode (IDLE, AUX, TX, RX, RX_Polling), an integrated
debounce logic is active. If there is an event on pin Tn a debounce counter is set to 0 (T = 0) and
started. The status is updated, an interrupt is issued and the debounce counter is stopped after
reaching the counter value T = 8195
An event on the same key input before reaching T = 8195
An event on an other key input before reaching T = 8195
debounce counter.
While the debounce counter is running, the bits VSOUT_EN and CLK_ON in control register 3
are set to “1”.
The interrupt is deleted after reading the status register or executing the command Delete_IRQ.
If pin Tn is not used, it can be left open because of an internal pull-up resistor (typically 50 k ).
Figure 7-3.
Start debounce counter
Stop debounce counter
Timing Flow Pin Tn, Status Bit STn
RX Polling Mode or
Event on Pin Tn ?
Event on Pin Tn ?
IDLE Mode or
AUX Mode or
TX Mode or
Tn = STn ?
RX Mode
T = 0
ATA5423/ATA5425/ATA5428/ATA5429
Y
Y
Y
N
N
N
T
Stop debounce counter
DCLK
T = 8195
Pin Tn = 0 ?
.
STn = 1
IRQ = 1
Y
Y
T ?
N
N
T
DCLK
Stop debounce counter
T
DCLK
stops the debounce counter.
STn = 0
IRQ = 1
resets and restarts the
45