PIC16LF1847-E/ML Microchip Technology, PIC16LF1847-E/ML Datasheet - Page 100

• Manufacturer Part Number: PIC16LF1847-E/ML
• Description: 14 KB Flash, 1K Bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced Mid Range Core, Nan
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ mTouch™ 16Fr

Specifications of PIC16LF1847-E/ML

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 32MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-VQFN Exposed Pad
• Core: PIC
• Processor Series: PIC16LF
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 32 MHz
• Data Ram Size: 256 B
• Number Of Programmable I/os: 15
• Number Of Timers: ÿ4 x 8-bit, 1 x 16-bit
• Operating Supply Voltage: 1.8 V to 5.5 V
• Mounting Style: Through Hole
• Interface Type: SPI, I2C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16(L)F1847
9.1.1
When global interrupts are disabled (GIE cleared) and
any interrupt source has both its interrupt enable bit
and interrupt flag bit set, one of the following will occur:
• If the interrupt occurs before the execution of a
FIGURE 9-1:
TABLE 9-1:
DS41453B-page 100
Name
INTCON
IOCBF
IOCBN
IOCBP
PIE1
PIE2
PIE4
PIR1
PIR2
PIR4
STATUS
WDTCON
Legend:
Instruction Flow
SLEEP instruction
- SLEEP instruction will execute as a NOP.
- WDT and WDT prescaler will not be cleared
- TO bit of the STATUS register will not be set
- PD bit of the STATUS register will not be
(INTCON reg.)
Note
Interrupt flag
GIE bit
Instruction
Fetched
Instruction
Executed
CLKOUT
cleared.
OSC1
1:
2:
3:
4:
PC
(1)
(2)
— = unimplemented, read as ‘0’. Shaded cells are not used in Power-down mode.
WAKE-UP USING INTERRUPTS
XT, HS or LP Oscillator mode assumed.
CLKOUT is not available in XT, HS, or LP Oscillator modes, but shown here for timing reference.
T
GIE = 1 assumed. In this case after wake-up, the processor calls the ISR at 0004h. If GIE = 0, execution will continue in-line.
TMR1GIE
TMR1GIF
OST
IOCBN7
IOCBP7
IOCBF7
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1
Inst(PC) = Sleep
OSFIE
OSFIF
Bit 7
GIE
—
—
—
—
Inst(PC - 1)
= 1024 T
SUMMARY OF REGISTERS ASSOCIATED WITH POWER-DOWN MODE
PC
WAKE-UP FROM SLEEP THROUGH INTERRUPT
OSC
IOCBF6
IOCBN6
IOCBP6
PEIE
ADIE
ADIF
Bit 6
C2IE
C2IF
(drawing not to scale). This delay applies only to XT, HS or LP Oscillator modes.
—
—
—
—
Inst(PC + 1)
Sleep
PC + 1
WDTPS4
TMR0IE
IOCBN5
IOCBP5
IOCBF5
RCIE
RCIF
Bit 5
C1IE
C1IF
—
—
—
Processor in
Sleep
WDTPS3
IOCBN4
IOCBF4
IOCBP4
PC + 2
INTE
TXIE
EEIE
EEIF
Bit 4
TXIF
TO
Preliminary
—
—
T
OST (3)
WDTPS2
IOCBF3
IOCBN3
IOCBP3
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
SSP1IE
BCL1IE
SSP1IF
BCL1IF
IOCE
Bit 3
Interrupt Latency
Inst(PC + 2)
Inst(PC + 1)
PD
—
—
• If the interrupt occurs during or after the execu-
Even if the flag bits were checked before executing a
SLEEP instruction, it may be possible for flag bits to
become set before the SLEEP instruction completes. To
determine whether a SLEEP instruction executed, test
the PD bit. If the PD bit is set, the SLEEP instruction
was executed as a NOP.
PC + 2
tion of a SLEEP instruction
- SLEEP instruction will be completely exe-
- Device will immediately wake-up from Sleep
- WDT and WDT prescaler will be cleared
- TO bit of the STATUS register will be set
- PD bit of the STATUS register will be cleared.
cuted
WDTPS1
IOCBN2
IOCBP2
TMR0IF
IOCBF2
CCP1IE
CCP1IF
Bit 2
—
—
—
—
Z
(4)
Dummy Cycle
PC + 2
WDTPS0
IOCBN1
IOCBF1
IOCBP1
TMR2IE
TMR2IF
BCL2IE
BCL2IF
Bit 1
INTF
DC
—
—
 2011 Microchip Technology Inc.
Dummy Cycle
Inst(0004h)
0004h
SWDTEN
IOCBF0
IOCBN0
IOCBP0
TMR1IE
CCP2IE
TMR1IF
SSP2IE
CCP2IF
SSP2IF
IOCF
Bit 0
C
Inst(0005h)
Inst(0004h)
Register on
0005h
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