PIC18F25K80-E/SS Microchip Technology, PIC18F25K80-E/SS Datasheet - Page 241
![ECAN, 32KB Flash, 4KB RAM, 16 MIPS, 12-bit ADC, CTMU 28 SSOP .209in TUBE](/photos/16/9/160971/ssop-28_sml.jpg)
PIC18F25K80-E/SS
Manufacturer Part Number
PIC18F25K80-E/SS
Description
ECAN, 32KB Flash, 4KB RAM, 16 MIPS, 12-bit ADC, CTMU 28 SSOP .209in TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F25K80-ISO.pdf
(628 pages)
Specifications of PIC18F25K80-E/SS
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
ECAN, I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.6K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
*
Processor Series
PIC18F25K80
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
I2C, SPI, USART
Maximum Clock Frequency
64 MHz
Number Of Programmable I/os
24
Number Of Timers
5
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC18F25K80-E/SS
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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18.0
The Charge Time Measurement Unit (CTMU) is a
flexible analog module that provides accurate differen-
tial time measurement between pulse sources, as well
as asynchronous pulse generation. By working with
other on-chip analog modules, the CTMU can precisely
measure time, capacitance and relative changes in
capacitance or generate output pulses with a specific
time delay. The CTMU is ideal for interfacing with
capacitive-based sensors.
The module includes these key features:
• Up to 11 channels available for capacitive or time
• Low-cost temperature measurement using on-chip
• On-chip precision current source
• Four-edge input trigger sources
• Polarity control for each edge source
FIGURE 18-1:
2011 Microchip Technology Inc.
measurement input
diode channel
CHARGE TIME
MEASUREMENT UNIT (CTMU)
ECCP1
CTED1
CTED2
CCP2
EDGEN
EDGSEQEN
EDG1POL
EDG2POL
EDG1SEL<1:0>
EDG2SEL<1:0>
CTMU BLOCK DIAGRAM
Control
Edge
Logic
EDG1STAT
EDG2STAT
A/D Converter
CTMUCONH:CTMUCONL
Preliminary
Current Source
CTMUICON
Current
Control
PIC18F66K80 FAMILY
Comparator 2
Input
ITRIM<5:0>
IRNG<1:0>
• Control of edge sequence
• Control of response to edges
• Time measurement resolution of 1 nanosecond
• High-precision time measurement
• Time delay of external or internal signal
• Accurate current source suitable for capacitive
The CTMU works in conjunction with the A/D Converter
to provide up to 11 channels for time or charge
measurement, depending on the specific device and
the number of A/D channels available. When config-
ured for time delay, the CTMU is connected to one of
the analog comparators. The level-sensitive input edge
sources can be selected from four sources: two
external inputs or the ECCP1/CCP2 Special Event
Triggers.
The CTMU special event can trigger the Analog-to-Digital
Converter module.
Figure 18-1
asynchronous to system clock
measurement
Comparator 2 Output
provides a block diagram of the CTMU.
Generator
Control
CTMU
Logic
Pulse
TGEN
IDISSEN
CTTRIG
DS39977C-page 241
A/D Trigger
CTPLS
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