PIC18F2220-I/SP Microchip Technology, PIC18F2220-I/SP Datasheet - Page 176
![IC MCU FLASH 2KX16 A/D 28DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
PIC18F2220-I/SP
Manufacturer Part Number
PIC18F2220-I/SP
Description
IC MCU FLASH 2KX16 A/D 28DIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2220-ISO.pdf
(394 pages)
3.PIC18F2220-ISO.pdf
(6 pages)
4.PIC18F2220-ISO.pdf
(6 pages)
5.PIC18F2220-ISO.pdf
(8 pages)
6.PIC18F2220-ISO.pdf
(6 pages)
7.PIC18F2220-ISO.pdf
(6 pages)
8.PIC18F2220-ISP.pdf
(388 pages)
Specifications of PIC18F2220-I/SP
Program Memory Type
FLASH
Program Memory Size
4KB (2K x 16)
Package / Case
28-DIP (0.300", 7.62mm)
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
25
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI/I2C/USART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
25
Number Of Timers
5
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE4000, ICE2000, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
10-ch x 10-bit
Package
28SPDIP
Device Core
PIC
Family Name
PIC18
Maximum Speed
40 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC18F2220-I/SP
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- PIC18F2220-ISO PDF datasheet #2
- PIC18F2220-ISO PDF datasheet #3
- PIC18F2220-ISO PDF datasheet #4
- PIC18F2220-ISO PDF datasheet #5
- PIC18F2220-ISO PDF datasheet #6
- PIC18F2220-ISO PDF datasheet #7
- PIC18F2220-ISP PDF datasheet #8
- Current page: 176 of 394
- Download datasheet (7Mb)
PIC18F2220/2320/4220/4320
17.4.4
Both 7 and 10-bit Slave modes implement automatic
clock stretching during a transmit sequence.
The SEN bit (SSPCON2<0>) allows clock stretching to
be enabled during receives. Setting SEN will cause
the SCL pin to be held low at the end of each data
receive sequence.
17.4.4.1
In 7-Bit Slave Receive mode, on the falling edge of the
ninth clock at the end of the ACK sequence if the BF bit
is set, the CKP bit in the SSPCON1 register is automat-
ically cleared, forcing the SCL output to be held low.
The CKP being cleared to ‘0’ will assert the SCL line
low. The CKP bit must be set in the user’s ISR before
reception is allowed to continue. By holding the SCL
line low, the user has time to service the ISR and read
the contents of the SSPBUF before the master device
can initiate another receive sequence. This will prevent
buffer overruns from occurring (see Figure 17-13).
17.4.4.2
In 10-Bit Slave Receive mode, during the address
sequence, clock stretching automatically takes place
but the CKP bit is not cleared. During this time, if the
UA bit is set after the ninth clock, clock stretching is ini-
tiated. The UA bit is set after receiving the upper byte
of the 10-bit address and following the receive of the
second byte of the 10-bit address with the R/W bit
cleared to ‘0’. The release of the clock line occurs
upon updating SSPADD. Clock stretching will occur on
each data receive sequence as described in 7-bit
mode.
DS39599G-page 174
Note:
Note 1: If the user reads the contents of the
2: The CKP bit can be set in software
CLOCK STRETCHING
If the user polls the UA bit and clears it by
updating the SSPADD register before the
falling edge of the ninth clock occurs and if
the user hasn’t cleared the BF bit by read-
ing the SSPBUF register before that time,
then the CKP bit will still NOT be asserted
low. Clock stretching on the basis of the
state of the BF bit only occurs during a
data sequence, not an address sequence.
SSPBUF before the falling edge of the
ninth clock, thus clearing the BF bit, the
CKP bit will not be cleared and clock
stretching will not occur.
regardless of the state of the BF bit. The
user should be careful to clear the BF bit
in the ISR before the next receive
sequence in order to prevent an overflow
condition.
Clock Stretching for 7-Bit Slave
Receive Mode (SEN = 1)
Clock Stretching for 10-Bit Slave
Receive Mode (SEN = 1)
17.4.4.3
7-Bit Slave Transmit mode implements clock stretch-
ing by clearing the CKP bit after the falling edge of the
ninth clock if the BF bit is clear. This occurs regardless
of the state of the SEN bit.
The user’s ISR must set the CKP bit before transmis-
sion is allowed to continue. By holding the SCL line
low, the user has time to service the ISR and load the
contents of the SSPBUF before the master device can
initiate another transmit sequence (see Figure 17-9).
17.4.4.4
In 10-Bit Slave Transmit mode, clock stretching is con-
trolled during the first two address sequences by the
state of the UA bit, just as it is in 10-Bit Slave Receive
mode. The first two addresses are followed by a third
address sequence which contains the high-order bits
of the 10-bit address and the R/W bit set to ‘1’. After
the third address sequence is performed, the UA bit is
not set, the module is now configured in Transmit
mode and clock stretching is controlled by the BF flag
as in 7-Bit Slave Transmit mode (see Figure 17-11).
Note 1: If the user loads the contents of SSPBUF,
2: The CKP bit can be set in software
setting the BF bit before the falling edge of
the ninth clock, the CKP bit will not be
cleared and clock stretching will not occur.
regardless of the state of the BF bit.
Clock Stretching for 7-Bit Slave
Transmit Mode
Clock Stretching for 10-Bit Slave
Transmit Mode
© 2007 Microchip Technology Inc.
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