MAXQ7670 Maxim, MAXQ7670 Datasheet - Page 14

• Manufacturer Part Number: MAXQ7670
• Description: The MAXQ7670 is a highly integrated solution for measuring multiple analog signals and outputting the results on a control area network (CAN) bus
• Manufacturer: Maxim

Microcontroller with 10-Bit ADC,
PGA, 64KB Flash, and CAN Interface
14
15, 22, 38
21, 39
PIN
10
11
12
13
14
16
17
18
19
20
1
2
3
4
5
6
7
8
9
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CANRXD
P0.7/T0B
REFADC
CANTXD
DVDDIO
P0.6/T0
GNDIO
NAME
AGND
AIN7
AIN6
AIN5
AIN4
AIN3
AIN2
AIN1
AIN0
P0.0
P0.1
P0.2
I.C.
SS
Analog Input Channel 7. AIN7 is multiplexed to the PGA or ADC as single-ended analog input 7 or as a
differential input with AIN6. As a differential input, the polarity of AIN7 is negative.
Analog Input Channel 6. AIN6 is multiplexed to the PGA or ADC as a single-ended analog input 6 or as a
differential input with AIN7. As a differential input, the polarity of AIN6 is positive.
Analog Input Channel 5. AIN5 is multiplexed to the PGA or ADC as single-ended analog input 5 or as a
differential input with AIN4. As a differential input, the polarity of AIN5 is negative.
Analog Input Channel 4. AIN4 is multiplexed to the PGA or ADC as single-ended analog input 4 or as a
differential input with AIN5. As a differential input, the polarity of AIN4 is positive.
ADC External Reference Input. Connect an external reference between 1V and V
Analog Ground
Analog Input Channel 3. AIN3 is multiplexed to the PGA or ADC as single-ended analog input 3 or as a
differential input with AIN2. As a differential input, the polarity of AIN3 is negative.
Analog Input Channel 2. AIN2 is multiplexed to the PGA or ADC as single-ended analog input 2 or as a
differential input with AIN3. As a differential input, the polarity of AIN2 is positive.
Analog Input Channel 1. AIN1 is multiplexed to the PGA or ADC as single-ended analog input 1 or as a
differential input with AIN0. As a differential input, the polarity of AIN1 is negative.
Analog Input Channel 0. AIN0 is multiplexed to the PGA or ADC as single-ended analog input 0 or as a
differential input with AIN1. As a differential input, the polarity of AIN0 is positive.
Internally Connected. Connect to GNDIO for proper operation.
Port 0 Bit 0. P0.0 is a general-purpose digital I/O with interrupt/wake-up capability.
Port 0 Bit 1. P0.1 is a general-purpose digital I/O with interrupt/wake-up capability.
Port 0 Bit 2. P0.2 is a general-purpose digital I/O with interrupt/wake-up capability.
Digital I/O Ground and Regulator Ground
CAN Bus Receiver Input. CAN receiver input.
CAN Bus Transmitter Output. CAN transmitter output.
Active-Low, SPI Port Slave Select Input. In SPI slave mode, this is the slave select input. In SPI master
mode, this is an input and connection is optional (connect if mode fault enable is required, refer to the
MAXQ7670 User’s Guide for a description of the SPICN register). In master mode, use an available GPIO
as a slave selector and pull SS high to DVDDIO through a pullup resistor.
Port 0 Bit 6/Timer 0 I/O. P0.6 is a general-purpose digital I/O with interrupt/wake-up input capability. T0 is a
primary timer/PWM input or output. The alternative function, T0, is selected using the T2CNA0 register.
When this function is selected, it overrides the GPIO functionality.
Port 0 Bit 7/Timer 0 Output. P0.7 is a general-purpose digital I/O with interrupt/wake-up input capability.
T0B is a secondary timer/PWM output. The alternative function, T0B, is selected using the T2CNB0 register.
When this function is selected, it overrides the GPIO functionality.
Digital I/O Supply Voltage and Regulator Supply Input. DVDDIO supplies all digital I/O except for XIN and
XOUT, and supplies power to the two internal linear regulators, AVDD and DVDD. Bypass DVDDIO to
GNDIO with a 0.1µF capacitor as close as possible to the device.
FUNCTION
Pin Description
AVDD
.