PIC16F747-E/ML Microchip Technology, PIC16F747-E/ML Datasheet - Page 454
PIC16F747-E/ML
Manufacturer Part Number
PIC16F747-E/ML
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,LLCC,44PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F737-ISP.pdf
(276 pages)
4.PIC16F737-ISP.pdf
(10 pages)
Specifications of PIC16F747-E/ML
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
36
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
I3DBF777 - BOARD DAUGHTER ICEPIC3
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F737-ISP PDF datasheet #3
- PIC16F737-ISP PDF datasheet #4
- Current page: 454 of 688
- Download datasheet (3Mb)
PICmicro MID-RANGE MCU FAMILY
24.4
24.4.1
24.4.2
DS31024A-page 24-12
REFOFF (SLPCON<5>)
Bandgap Voltage Reference
Slope Reference Voltage Divider
SREFLO
K
Other Analog Modules
REF
Reference
Bandgap
=
~
Additional analog modules for mixed signal applications are required. These include:
• bandgap voltage reference
• slope reference voltage divider
The bandgap reference circuit is used to generate a 1.2V nominal stable voltage reference for
the Slope A/D, the low-voltage detector, and the slope reference divider. The bandgap reference
voltage is available on the analog MUX. To enable the bandgap reference REFOFF (SLP-
CON<5>) must be cleared. The bandgap reference must be enabled for any slope A/D conver-
sion.
The bandgap reference calibration factor is stored in the calibration space EPROM.
The slope reference voltage divider circuit, consisting of a buffer amplifier and resistor divider, is
connected to the internal bandgap reference producing two other voltage references called
SREFHI and SREFLO (see
1.2V, and SREFLO is nominally 0.13V. These reference voltages are available on two of the ana-
log multiplexer channels. The Slope A/D module and firmware can measure the SREFHI and
SREFLO voltages, and in conjunction with the K
ADC's offset and slope errors.
See AN624 for further details.
Figure 24-3: Slope Reference Divider
SREFHI
SREFHI - SREFLO
9
SREFLO
V
REF
ADOFF (SLPCON<0>)
Figure
+
_
24-3). SREFHI is nominally the same as the bandgap voltage,
REF
and K
BG
calibration data correct for the
1997 Microchip Technology Inc.
SREFHI
SREFLO
To Slope A/D
MUX
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