MAX1358BETL+ Maxim Integrated Products, MAX1358BETL+ Datasheet - Page 54

• Manufacturer Part Number: MAX1358BETL+
• Description: IC DAS 16BIT 40-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Data Acquisition System (DAS)r

Specifications of MAX1358BETL+

• Resolution (bits): 16 b
• Sampling Rate (per Second): 21.84k
• Data Interface: Serial
• Voltage Supply Source: Analog and Digital
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-TQFN Exposed Pad
• Number Of Converters: 2
• Resolution: 16 bit
• Interface Type: Serial (4-Wire, SPI, QSPI, Microwire)
• Voltage Reference: 1.25 V
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.8 V
• Maximum Power Dissipation: 2051.3 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Input Voltage: 1.8 V to 3.6 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The UPIO_SPI pass-through control register bits map
the serial interface signals to the UPIO pins, allowing
the DAS to drive other devices at CPOUT or DV
age levels, depending on the SV_ bit setting found in
the UPIO_CTRL register. Individual bits are provided to
set only the desired UPIO inputs to the SPI pass-
through mode. This mode becomes active when CS is
driven high to complete the write to this register, and
remains active as long as CS stays high (i.e., multiple
pass-through writes are possible). The SPI pass-
through mode is deactivated immediately when CS is
pulled low for the next DAS write.
The UPIO_ state (both before and after the SPI pass-
through mode) is set by the UP_MD<3:0> and LL_ bits.
When a UPIO is configured for SPI pass-through mode
and the CS is high, UPR_, UPF_, and LL_ continue to
detect UPIO_ edges, which can still generate interrupts.
See Figure 18 for an SPI pass-through timing diagram.
16-Bit, Data-Acquisition System with ADC, DACs,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
UPIO_SPI Register (Power-On State: 0000 XXXX)
Figure 18. SPI Pass-Through Timing Diagram
54
UPIO4
UPIO3
UPIO2
UPIO1
DOUT
SCLK
DIN
______________________________________________________________________________________
UP4S
MSB
CS
D
N
D
WRITE TO DAS TO ENABLE SPI MODE
N-1
SET BY UPIO4_CTRL REGISTER
SET BY UPIO3_CTRL REGISTER
SET BY UPIO2_CTRL REGISTER
SET BY UPIO1_CTRL REGISTER
D
UP3S
N-2
D
N-3
D
3
D
2
UP2S
D
1
D
0
E
E
N
N
DD
UP1S
E
E
WRITE THROUGH DAS TO UPIO DEVICE
N-1
N-1
volt-
E
E
N-2
N-2
E
E
N-3
N-3
UP4S: UPIO4 SPI pass-through-mode enable bit. A
logic 1 maps the inverted CS signal to the UPIO4 pin.
Therefore, UPIO4 is low (near DGND) when SPI pass-
through mode is active, and is high (near DV
CPOUT) when the mode is inactive. A logic 0 disables
the UPIO4 SPI pass-through mode. The power-on
default is 0.
UP3S: UPIO3 SPI pass-through-mode enable bit. A
logic 1 maps the SCLK signal to UPIO3 (directly with no
inversion), while a logic 0 disables the UPIO3 SPI pass-
through mode. The power-on default is 0.
UP2S: UPIO2 SPI pass-through-mode enable bit. A
logic 1 maps the DIN signal to UPIO2 (directly with no
inversion), while a logic 0 disables the UPIO2 SPI pass-
through mode. The power-on default is 0.
UP1S: UPIO1 SPI pass-through-mode enable bit. A
logic 1 maps the UPIO1 input signal to DOUT (directly
with no inversion), while a logic 0 disables the UPIO1
SPI pass-through mode. The power-on default is 0.
E
E
X
X
3
3
X
E
E
X
X
2
2
X
E
X
E
1
1
E
E
X
X
0
0
D
7
X
D
6
SET BY UPIO4_CTRL REGISTER
SET BY UPIO3_CTRL REGISTER
SET BY UPIO2_CTRL REGISTER
SET BY UPIO1_CTRL REGISTER
NORMAL WRITE TO DAS
D
5
D
4
X
D
3
D
2
D
1
LSB
D
X
0
DD
or