PIC16F877-20I/PQ Microchip Technology Inc., PIC16F877-20I/PQ Datasheet - Page 177
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PIC16F877-20I/PQ
Manufacturer Part Number
PIC16F877-20I/PQ
Description
44 PIN, 7 KB FLASH, 368 RAM, 33 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F877-20IPQ.pdf
(218 pages)
Specifications of PIC16F877-20I/PQ
A/d Inputs
8-Channel, 10-Bit
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
33
Interface
I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin PQFP
Programmable Memory
14K Bytes
Ram Size
368 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
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FIGURE 15-21:
TABLE 15-13: A/D CONVERSION REQUIREMENTS
Note 1: ADRES register may be read on the following T
Param
No.
130
131
132
134
2001 Microchip Technology Inc.
*
†
§
A/D DATA
2: See Section 11.1 for minimum conditions.
Note: If the A/D clock source is selected as RC, a time of T
SAMPLE
A/D CLK
BSF ADCON0, GO
ADRES
T
Sym
T
T
T
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
This specification ensured by design.
CNV
ACQ
ADIF
AD
GO
GO
Q4
instruction to be executed.
A/D clock period
Conversion time (not including S/H time)
(Note 1)
Acquisition time
Q4 to A/D clock start
132
A/D CONVERSION TIMING
Characteristic
(T
OSC
/2)
Extended(LF)
Standard(F)
Extended(LF)
Standard(F)
9
(1)
8
OLD_DATA
CY
7
cycle.
SAMPLING STOPPED
(Note 2)
Min
10*
1.6
3.0
2.0
3.0
—
CY
is added before the A/D clock starts. This allows the SLEEP
131
130
T
OSC
Typ†
4.0
6.0
40
—
—
—
—
/2 §
2
Max
6.0
9.0
12
—
—
—
—
—
1
Units
T
—
AD
s
s
s
s
s
s
1 T
0
CY
PIC16F87X
T
T
A/D RC mode
A/D RC mode
The minimum time is the
amplifier settling time. This may
be used if the "new" input volt-
age has not changed by more
than 1 LSb (i.e., 20.0 mV @
5.12V) from the last sampled
voltage (as stated on C
If the A/D clock source is
selected as RC, a time of T
added before the A/D clock
starts. This allows the SLEEP
instruction to be executed.
OSC
OSC
based, V
based, V
NEW_DATA
DONE
Conditions
DS30292C-page 175
REF
REF
3.0V
2.0V
HOLD
CY
).
is
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