MAX6708YKA+T Maxim Integrated, MAX6708YKA+T Datasheet - Page 23

• Manufacturer Part Number: MAX6708YKA+T
• Description: Supervisory Circuits uP Supervisor
• Manufacturer: Maxim Integrated
• Series: MAX6701, MAX6701A, MAX6702, MAX6702A, MAX6703, MAX6703A, MAX6704, MAX6705, MAX6705A, MAX6706, MAX6706A, MAX6707, MAX6707A, MAX6708r

Specifications of MAX6708YKA+T

• Rohs: yes
• Number Of Voltages Monitored: 1
• Monitored Voltage: 2.5 V, 3 V, 3.3 V, 5 V
• Undervoltage Threshold: 2.12 V
• Overvoltage Threshold: 2.25 V
• Output Type: Active High, Active Low, Push-Pull
• Manual Reset: Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 300 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23
• Chip Enable Signals: No
• Maximum Power Dissipation: 714 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: Yes
• Supply Current (typ): 6 uA
• Supply Voltage - Min: 1.2 V

Figure 22 shows an application circuit to interface the
MAX186/MAX188 to the TMS320 in external clock
mode. The timing diagram for this interface circuit is
shown in Figure 23.
Use the following steps to initiate a conversion in the
MAX186/MAX188 and to read the results:
1) The TMS320 should be configured with CLKX (trans-
2) The MAX186/MAX188 CS is driven low by the XF_
3) An 8-bit word (1XXXXX11) should be written to the
4) The SSTRB output of the MAX186/MAX188 is moni-
Figure 21. QSPI Assembly-Code Timing
mit clock) as an active-high output clock and CLKR
(TMS320 receive clock) as an active-high input clock.
CLKX and CLKR of the TMS320 are tied together with
the SCLK input of the MAX186/MAX188.
I/O port of the TMS320 to enable data to be clocked
into DIN of the MAX186/MAX188.
MAX186/MAX188 to initiate a conversion and place
the device into external clock mode. Refer to Table
2 to select the proper XXXXX bit values for your spe-
cific application.
tored via the FSR input of the TMS320. A falling
edge on the SSTRB output indicates that the conver-
sion is in progress and data is ready to be received
from the MAX186/MAX188.
______________________________________________________________________________________
TMS320C3x to MAX186 Interface
Figure 22. MAX186/MAX188 to TMS320 Serial Interface
5) The TMS320 reads in one data bit on each of the
6) Pull CS high to disable the MAX186/MAX188 until
Low-Power, 8-Channel,
next 16 rising edges of SCLK. These data bits rep-
resent the 12-bit conversion result followed by four
trailing bits, which should be ignored.
the next conversion is initiated.
TMS320C3x
Serial 12-Bit ADCs
CLKR
CLKX
FSR
DR
DX
XF
CS
SCLK
DIN
DOUT
SSTRB
MAX186
MAX188
CS
SCLK
SSTRB
DIN
23