PIC16F874-20/L Microchip Technology, PIC16F874-20/L Datasheet - Page 607

• Manufacturer Part Number: PIC16F874-20/L
• Description: IC MCU FLASH 4KX14 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F874-20/L

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: MSSP, PSP, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164309 - MODULE SKT FOR PM3 44PLCC444-1001 - DEMO BOARD FOR PICMICRO MCUDVA16XL441 - ADAPTER DEVICE ICE 44PLCC309-1040 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1039 - ADAPTER 44-PLCC TO 40-DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Details

Figure 30-20:
Table 30-33:
Note 1: ADRES register may be read on the following T
Param
1997 Microchip Technology Inc.
No.
130
131
132
136
135
Note 1: If the A/D clock source is selected as RC, a time of T
† Data in “Typ” column is at 5V, 25 C unless otherwise stated. These parameters are for design guidance only and are not
§ This specification ensured by design.
2: See the
3: The time for the holding capacitor to acquire the “New” input voltage when the voltage changes full scale
4: On the next Q4 cycle of the device clock
A/D DATA
SAMPLE
tested.
A/D CLK
ADRES
Symbol Characteristic
1 LSb.
after the conversion (AV
50 .
BSF ADCON0, GO
2: This is a minimal RC delay (typically 100 nS), which also disconnects the holding capacitor from the
T
T
T
T
ADIF
T
SWC
CNV
ACQ
AMP
GO
AD
Q4
This allows the SLEEP instruction to be executed.
analog input.
Example 10-bit A/D Conversion Requirements
“10-bit A/D Converter”
Example 10-bit A/D Conversion Timing Waveforms
A/D clock period
Conversion time
(not including acquisition time)
(Note 1)
Acquisition time (Note 3)
Amplifier settling time (Note 2)
Switching Time from
convert
132
Section 30. Electrical Specifications
sample
Note 2
DD
9
to AV
PIC16CXXX
PIC16LCXXX
PIC16CXXX
PIC16LCXXX
section for minimum conditions when input voltage has changed more than
SS
8
, or AV
OLD_DATA
7
SS
to AV
. . .
SAMPLING STOPPED
11 §
Min
1.6
3.0
2.0
3.0
15
10
CY
—
1
cycle.
DD
. . .
). The source impedance ( R
131
130
Typ†
4.0
6.0
—
—
—
—
—
—
—
CY
is added before the A/D clock starts.
2
Note 4
Max
12 §
6.0
9.0
—
—
—
—
—
1
Units
T
AD
s
s
s
s
s
s
s
0
T
T
A/D RC Mode
A/D RC Mode
-40 C
This may be used if the “new”
input voltage has not changed
by more than 1LSb (i.e. 5 mV @
5.12V) from the last sampled
voltage (as stated on C
OSC
OSC
0 C
S
) on the input channels is
based, V
based, V
NEW_DATA
Temp
Temp
DONE
Conditions
DS31030A-page 30-37
T
REF
REF
CY
125 C
125 C
full range
HOLD
3.0V
).
30