PIC18F1220-H/P Microchip Technology, PIC18F1220-H/P Datasheet - Page 267

• Manufacturer Part Number: PIC18F1220-H/P
• Description: IC MCU 8BIT 4KB FLASH 18PDIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F1220-H/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 18-DIP (0.300", 7.62mm)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FIGURE 22-14:
TABLE 22-14: A/D CONVERSION REQUIREMENTS
© 2007 Microchip Technology Inc.
130
131
132
135
136
Note 1:
Param
No.
A/D CLK
Note 1: If the A/D clock source is selected as RC, a time of T
A/D DATA
SAMPLE
2:
3:
4:
5:
ADRES
BSF ADCON0, GO
T
T
T
T
T
Symbol
ADIF
2: This is a minimal RC delay (typically 100 ns), which also disconnects the holding capacitor from the analog input.
AD
CNV
ACQ
SWC
AMP
GO
Q4
ADRES register may be read on the following T
See Section 17.0 “10-Bit Analog-to-Digital Converter (A/D) Module” for minimum conditions when input
voltage has changed more than 1 LSb.
The time for the holding capacitor to acquire the “New” input voltage, when the voltage changes full scale after
the conversion (AV
On the next Q4 cycle of the device clock.
The time of the A/D clock period is dependent on the device frequency and the T
(1)
This allows the SLEEP instruction to be executed.
132
A/D Clock Period
Conversion Time
(not including acquisition time) (Note 1)
Acquisition Time (Note 3)
Switching Time from Convert → Sample
Amplifier Settling Time (Note 2)
A/D CONVERSION TIMING
DD
(Note 2)
Characteristic
to AV
9
SS
, or AV
8
PIC18F1X20
PIC18LF1X20
PIC18F1X20
PIC18LF1X20
OLD_DATA
SS
7
to AV
CY
. . .
Sampling Stopped
DD
is added before the A/D clock starts.
). The source impedance (R
CY
. . .
131
130
cycle.
Min
1.6
3.0
2.0
3.0
15
10
11
—
1
2
(Note 4)
PIC18F1220/1320
20
20
Max
6.0
9.0
12
—
—
—
1
(5)
(5)
Units
T
μs
μs
μs
μs
μs
μs
μs
AD
S
0
) on the input channels is 50Ω.
T
T
A/D RC mode
A/D RC mode
-40°C ≤ Temp ≤ +125°C
0°C ≤ Temp ≤ +125°C
This may be used if the
“new” input voltage has not
changed by more than 1 LSb
(i.e., 5 mV @ 5.12V) from the
last sampled voltage (as
stated on C
OSC
OSC
AD
based, V
based, V
clock divider.
NEW_DATA
DONE
Conditions
DS39605F-page 265
HOLD
T
CY
REF
REF
).
≥ 3.0V
full range