PIC18LF2221-I/ML Microchip Technology, PIC18LF2221-I/ML Datasheet - Page 171
![4 KB Flash, 512 RAM 28 QFN 6x6mm TUBE](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC18LF2221-I/ML
Manufacturer Part Number
PIC18LF2221-I/ML
Description
4 KB Flash, 512 RAM 28 QFN 6x6mm TUBE
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18F2221-ISO.pdf
(402 pages)
2.PIC18F2221-ISO.pdf
(8 pages)
3.PIC18F2221-ISO.pdf
(30 pages)
4.PIC18F2221-ISO.pdf
(46 pages)
5.PIC18LF2221-IML.pdf
(394 pages)
Specifications of PIC18LF2221-I/ML
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF2221-I/ML
Manufacturer:
Microchip Technology
Quantity:
135
Part Number:
PIC18LF2221-I/ML
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC18F2221-ISO PDF datasheet
- PIC18F2221-ISO PDF datasheet #2
- PIC18F2221-ISO PDF datasheet #3
- PIC18F2221-ISO PDF datasheet #4
- PIC18LF2221-IML PDF datasheet #5
- Current page: 171 of 394
- Download datasheet (7Mb)
17.3.8
In SPI Master mode, module clocks may be operating
at a different speed than when in full power mode. In
the case of Sleep mode, all clocks are halted.
In Idle modes, a clock is provided to the peripherals.
That clock should be from the primary clock source, the
secondary clock (Timer1 oscillator at 32.768 kHz) or
the INTOSC source. See Section 2.7 “Clock Sources
and Oscillator Switching” for additional information.
In most cases, the speed that the master clocks SPI
data is not important; however, this should be
evaluated for each system.
If MSSP interrupts are enabled, they can wake the
controller from Sleep mode, or one of the Idle modes,
when the master completes sending data. If an exit
from Sleep or Idle mode is not desired, MSSP
interrupts should be disabled.
If the Sleep mode is selected, all module clocks are
halted and the transmission/reception will remain in
that state until the devices wakes. After the device
returns to Run mode, the module will resume
transmitting and receiving data.
In SPI Slave mode, the SPI Transmit/Receive Shift
register operates asynchronously to the device. This
allows the device to be placed in any power-managed
mode and data to be shifted into the SPI Transmit/
Receive Shift register. When all 8 bits have been
received, the MSSP interrupt flag bit will be set and if
enabled, will wake the device.
TABLE 17-2:
© 2005 Microchip Technology Inc.
INTCON
PIR1
PIE1
IPR1
TRISA
TRISC
SSPBUF
SSPCON1
SSPSTAT
Legend: Shaded cells are not used by the MSSP in SPI™ mode.
Note 1:
Name
2:
These bits are unimplemented on 28-pin devices and read as ‘0’.
PORTA<7:6> and their direction bits are individually configured as port pins based on various primary
oscillator modes. When disabled, these bits read as ‘0’.
OPERATION IN POWER-MANAGED
MODES
PORTC Data Direction Control Register
MSSP Receive Buffer/Transmit Register
GIE/GIEH PEIE/GIEL TMR0IE
TRISA7
PSPIF
PSPIE
PSPIP
WCOL
Bit 7
SMP
REGISTERS ASSOCIATED WITH SPI™ OPERATION
(1)
(1)
(1)
(2)
TRISA6
SSPOV
ADIE
ADIP
ADIF
Bit 6
CKE
(2)
PORTA Data Direction Control Register
SSPEN
RCIF
RCIE
RCIP
Bit 5
D/A
Advance Information
INT0IE
TXIF
TXIE
TXIP
Bit 4
CKP
P
SSPM3
SSPIE
SSPIP
SSPIF
17.3.9
A Reset disables the MSSP module and terminates the
current transfer.
17.3.10
Table 17-1 shows the compatibility between the
standard SPI modes and the states of the CKP and
CKE control bits.
TABLE 17-1:
There is also an SMP bit which controls when the data
is sampled.
RBIE
Bit 3
PIC18F4321 FAMILY
Standard SPI™ Mode
S
Terminology
0, 0
0, 1
1, 0
1, 1
TMR0IF
CCP1IF
CCP1IE
CCP1IP
SSPM2
EFFECTS OF A RESET
BUS MODE COMPATIBILITY
Bit 2
R/W
SPI™ BUS MODES
TMR2IE
TMR2IP
TMR2IF
SSPM1
INT0IF
Bit 1
UA
Control Bits State
CKP
0
0
1
1
TMR1IF
TMR1IE
TMR1IP
SSPM0
RBIF
Bit 0
DS39689A-page 169
BF
on page
CKE
Values
Reset
1
0
1
0
49
52
52
52
52
52
50
50
50
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