MAX11358B Datasheet, PDF (24/70 Pages) Maxim Integrated Products – 16-Bit Data-Acquisition System with ADC, DAC, UPIOs, RTC, Voltage Monitors, and Temp Sensor

16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
Pin Description
PIN
NAME
FUNCTION
1
CLK Clock Output. Default is 2.457MHz output clock for the μC.
2
UPIO2 User-Programmable Input/Output 2. See the UPIO2_CTRL Register section for functionality.
3
UPIO3 User-Programmable Input/Output 3. See the UPIO3_CTRL Register section for functionality.
4
UPIO4 User-Programmable Input/Output 4. See the UPIO4_CTRL Register section for functionality.
5
DOUT
Serial-Data Output. Data is clocked out on SCLK’s falling edge. High impedance when CS is high, when
UPIO/SPI pass-through mode is enabled, DOUT mirrors the state of UPIO1.
6
SCLK Serial-Clock Input. Clocks data in and out of the serial interface.
7
DIN Serial-Data Input. Data is clocked in on SCLK’s rising edge.
Active-Low Chip-Select Input. Data is not clocked into DIN unless CS is low. When CS is high, DOUT is high
8
CS
impedance. High impedance when CS is high; when UPIO/SPI pass-through mode is enabled, DOUT
mirrors the state of UPIO1.
9
INT Programmable Active-High/Low Interrupt Output. ADC, UPIO wake-up, alarm, and voltage-monitor events.
32kHz Clock Input/Output. Outputs 32kHz clock for the μC. Can be programmed as an input by enabling
10
CLK32K the IO32E bit to accept an external 32kHz input clock. The RTC, PWM, and watchdog timer always use the
internal 32kHz clock derived from the 32kHz crystal.
Active-Low, Open-Drain Reset Output. Remains low while DV_DD is below the 1.8V voltage threshold and
11
RESET stays low for a timeout period (t_DSLP) after DV_DD rises above the 1.8V threshold. RESET also pulses low
when the watchdog timer times out and holds low during POR until the 32kHz oscillator stabilizes.
12
32KOUT 32kHz Crystal Output. Connect an external 32kHz watch crystal between 32KIN and 32KOUT.
13
32KIN 32kHz Crystal Input. Connect an external 32kHz watch crystal between 32KIN and 32KOUT.
14
SNO1 Analog Switch 1 Normally Open Terminal. Analog input to mux.
15
SCM1 Analog Switch 1 Common Terminal. Analog input to mux.
16
SNC1 Analog Switch 1 Normally Closed Terminal. Analog input to mux (open on POR).
17
SNO2 Analog Switch 2 Normally Open Terminal. Analog input to mux.
18
SCM2 Analog Switch 2 Common Terminal. Analog input to mux (open on POR).
19
SNC2 Analog Switch 2 Normally Closed Terminal. Analog input to mux.
20
OUT1 Amplifier 1 Output. Analog input to mux.
21
IN1- Amplifier 1 Inverting Input. Analog input to mux.
22
IN1+ Amplifier 1 Noninverting Input
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