PIC32MX764F128H-I/MR Microchip Technology, PIC32MX764F128H-I/MR Datasheet - Page 157

• Manufacturer Part Number: PIC32MX764F128H-I/MR
• Description: 64 PINS, 128KB Flash, 32KB RAM, 80 MHz, USB, CAN, Ethernet, 4 DMA 64 QFN 9x9x0.9
• Manufacturer: Microchip Technology
• Series: PIC® 32MXr

Specifications of PIC32MX764F128H-I/MR

• Core Processor: MIPS32® M4K™
• Core Size: 32-Bit
• Speed: 80MHz
• Connectivity: CAN, Ethernet, I²C, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 2.3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN Exposed Pad
• Processor Series: PIC32MX5x
• Core: MIPS32
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 80 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 5
• Operating Supply Voltage: 2.3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

26.0
FIGURE 26-1:
© 2010 Microchip Technology Inc.
Note 1: This bit is not available on PIC32MX575/675/695/775 devices. On these devices CV
Note 1: This data sheet summarizes the features
2: Some registers and associated bits
COMPARATOR VOLTAGE
REFERENCE (CV
network and IV
of the PIC32MX5XX/6XX/7XX family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 20. “Comparator
Voltage Reference (CV
in the “PIC32 Family Reference Manual” ,
which is available from the Microchip web
site (www.microchip.com/PIC32).
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization”
this data sheet for device-specific register
and bit information.
V
AV
REF
V
AV
CVREN
DD
REF
CVRR
+
SS
-
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
REF
CVRSS = 0
CVRSS = 1
is connected to 0.6V.
REF
CVRSS = 1
CVRSS = 0
REF
)
16 Steps
)” (DS61109)
8R
R
R
R
R
R
R
R
CV
in
RSRC
8R
The CV
that provides a selectable reference voltage. Although
its primary purpose is to provide a reference for the
analog comparators, it also may be used independently
of them.
A block diagram of the module is illustrated in
Figure
provide two ranges of voltage reference values and has
a power-down function to conserve power when the
reference is not being used. The module’s supply refer-
ence can be provided from either device V
external voltage reference. The CV
able for the comparators and typically available for pin
output.
The comparator voltage reference has the following
features:
• High and low range selection
• Sixteen output levels available for each range
• Internally connected to comparators to conserve
• Output can be connected to a pin
1.2V
0.6V
0.2V
PIC32MX5XX/6XX/7XX
device pins
26-1. The resistor ladder is segmented to
REF
CVR<3:0>
BGSEL<1:0>
module is a 16-tap, resistor ladder network
CVRCON<CVROE>
REF
(1)
IV
is generated by the Register
REF
V
REFSEL
CV
REFOUT
REF
DS61156F-page 157
(1)
output is avail-
CV
DD
REF
/V
SS
or an