PIC18C658-E/L Microchip Technology, PIC18C658-E/L Datasheet - Page 232
![IC MCU OTP 16KX16 CAN 68PLCC](/photos/12/13/121323/c04-049_l_sml.jpg)
PIC18C658-E/L
Manufacturer Part Number
PIC18C658-E/L
Description
IC MCU OTP 16KX16 CAN 68PLCC
Manufacturer
Microchip Technology
Series
PIC® 18Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16C770-ISO.pdf
(8 pages)
3.PIC18C658-IPT.pdf
(366 pages)
4.PIC18C658-IPT.pdf
(16 pages)
5.PIC18C658-IPT.pdf
(16 pages)
6.PIC18C658-IPT.pdf
(16 pages)
Specifications of PIC18C658-E/L
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
52
Program Memory Size
32KB (16K x 16)
Program Memory Type
OTP
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
68-PLCC
Processor Series
PIC18C
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1536 B
Interface Type
3-Wire, I2C, SPI, USART, CAN
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
52
Number Of Timers
4 bit
Operating Supply Voltage
2.5 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
ICE2000, DM163007, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
6
For Use With
AC164308 - MODULE SKT FOR PM3 68PLCCDVA18XL680 - ADAPTER DEVICE ICE 68PLCCAC174007 - MODULE SKT PROMATEII 68PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
PIC18C658E/L
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18C658-E/L
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16C770-ISO PDF datasheet #2
- PIC18C658-IPT PDF datasheet #3
- PIC18C658-IPT PDF datasheet #4
- PIC18C658-IPT PDF datasheet #5
- PIC18C658-IPT PDF datasheet #6
- Current page: 232 of 366
- Download datasheet (7Mb)
PIC18CXX8
18.1
For the A/D converter to meet its specified accuracy,
the charge holding capacitor (C
to fully charge to the input channel voltage level. The
analog input model is shown in Figure 18-2. The
source impedance (R
switch (R
required to charge the capacitor C
switch (R
(V
at the analog input (due to pin leakage current). The
maximum recommended impedance for analog
sources is 2.5k . After the analog input channel is
selected (changed), this acquisition must be done
before the conversion can be started.
EQUATION 18-1:
EQUATION 18-2:
EXAMPLE 18-1: CALCULATING THE MINIMUM REQUIRED ACQUISITION TIME
DS30475A-page 232
T
T
Temperature coefficient is only required for temperatures > 25 C.
T
T
T
ACQ
V
or
Tc
ACQ
ACQ
C
ACQ
DD
Note:
HOLD
=
). The source impedance affects the offset voltage
=
=
=
=
=
A/D Acquisition Requirements
SS
SS
When the conversion is started, the hold-
ing capacitor is disconnected from the
input pin.
) impedance varies over the device voltage
) impedance directly affect the time
Amplifier Settling Time +
Holding Capacitor Charging Time +
Temperature Coefficient
T
=
=
T
2 s + Tc + [(Temp - 25 C)(0.05 s/ C)]
-C
-120 pF (1 k
-120 pF (10.5 k ) ln(0.0004885)
-1.26 s (-7.6241)
9.61 s
2 s + 9.61 s + [(50 C - 25 C)(0.05 s/ C)]
11.61 s + 1.25 s
12.86 s
AMP
AMP
HOLD
(V
-(120 pF)(1 k + R
+ T
+ T
REF
(R
C
ACQUISITION TIME
A/D MINIMUM CHARGING TIME
C
S
) and the internal sampling
+ T
- (V
IC
+ T
+ R
COFF
COFF
REF
+ 7 k + 2.5 k ) ln(0.0004885)
SS
HOLD
/2048)) • (1 - e
+ R
HOLD
) must be allowed
SS
S
) ln(1/2047)
. The sampling
+ R
Advanced Information
S
) ln(1/2047)
(-Tc/C
HOLD
(R
IC
+ R
SS
To
Equation 18-1 may be used. This equation assumes
that 1/2 LSb error is used (1024 steps for the A/D). The
1/2 LSb error is the maximum error allowed for the A/D
to meet its specified resolution.
Example 18-1 shows the calculation of the minimum
required acquisition time T
based on the following application system assump-
tions:
C
Rs
Conversion Error
V
Temperature
V
+ R
HOLD
DD
HOLD
S
))
calculate
)
the
=
=
=
=
=
minimum
2000 Microchip Technology Inc.
120 pF
2.5 k
1/2 LSb
5V
50 C (system max.)
0V @ time = 0
ACQ
. This calculation is
Rss = 7 k
acquisition
time,
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