MAX6745XKVD3+T Maxim Integrated, MAX6745XKVD3+T Datasheet - Page 15

• Manufacturer Part Number: MAX6745XKVD3+T
• Description: Supervisory Circuits MCU Supervisor
• Manufacturer: Maxim Integrated
• Series: MAX6736, MAX6737, MAX6738, MAX6739, MAX6740, MAX6741, MAX6742, MAX6743, MAX6744, MAX6745r

Specifications of MAX6745XKVD3+T

• Rohs: yes
• Number Of Voltages Monitored: 2
• Monitored Voltage: 1.8 V to 5 V, 0.9 V to 3.3 V
• Undervoltage Threshold: 1.53 V, 0.765 V
• Overvoltage Threshold: 1.62 V, 0.81 V
• Output Type: Active Low, Push-Pull
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 225 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SC-70
• Chip Enable Signals: No
• Maximum Power Dissipation: 247 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: Yes
• Supply Current (typ): 5 uA, 10 uA
• Supply Voltage - Min: 1 V

Figure 2. IR Transmit Carrier Generation and Carrier Modulator Control
Figure 3. IR Transmission Waveform (IRCFME = 0)
IRTX pin is set to a logic-high when the IR timer module is
enabled. If IRTXPOL = 0, the IRTX pin is set to a logic-low
when the IR timer is enabled.
A separate register bit, IR data (IRDATA), is used to
determine whether the carrier generator output is output
to the IRTX pin for the next IRMT carrier cycles. When
IRDATA = 1, the carrier waveform (or inversion of this
waveform if IRTXPOL = 1) is output on the IRTX pin dur-
ing the next IRMT cycles. When IRDATA = 0, the idle
Maxim Integrated
CARRIER OUTPUT
IR INTERRUPT
IRTXPOL = 1
IRTXPOL = 0
16-Bit Microcontroller with Infrared Module
IRDATA
(IRV)
IRTX
IRTX
IRCLK
0
IRMT = 3
3
1
2
1
0
IRCAH + 1
CARRIER GENERATION
3
2
1
IRCAL + 1
0
IRDATA
IRMT
CARRIER
0
condition, as defined by IRTXPOL, is output on the IRTX
pin during the next IRMT cycles.
The IR timer acts as a down counter in transmit mode. An
IR transmission starts when the IREN bit is set to 1 when
IRMODE = 1; when the IRMODE bit is set to 1 when IREN
= 1; or when IREN and IRMODE are both set to 1 in the
same instruction. The IRMT and IRCA registers, along
with the IRDATA and IRTXPOL bits, are sampled at the
beginning of the transmit process and every time the IR
IRCFME
0
1
CARRIER MODULATION
IRV = 0000h
IRDATA ON
SAMPLE
IRTXPOL
IR INTERRUPT
0
1
MAXQ613
IRTX PIN
15