PIC18LF252-I/SOG Microchip Technology, PIC18LF252-I/SOG Datasheet - Page 40
![IC MCU FLASH 16KX16 28SOIC](/photos/6/59/65909/150-28-soic_sml.jpg)
PIC18LF252-I/SOG
Manufacturer Part Number
PIC18LF252-I/SOG
Description
IC MCU FLASH 16KX16 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F242-ISO.pdf
(332 pages)
3.PIC18F242-ISO.pdf
(14 pages)
4.PIC18F242-ISO.pdf
(16 pages)
5.PIC18F242-ISO.pdf
(16 pages)
6.PIC18F242-ISO.pdf
(14 pages)
7.PIC18LF242-ISO.pdf
(36 pages)
Specifications of PIC18LF252-I/SOG
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
23
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC18F242-ISO PDF datasheet #2
- PIC18F242-ISO PDF datasheet #3
- PIC18F242-ISO PDF datasheet #4
- PIC18F242-ISO PDF datasheet #5
- PIC18F242-ISO PDF datasheet #6
- PIC18LF242-ISO PDF datasheet #7
- Current page: 40 of 332
- Download datasheet (6Mb)
PIC18FXX2
REGISTER 4-1:
FIGURE 4-3:
4.2.3
Since the Top-of-Stack (TOS) is readable and writable,
the ability to push values onto the stack and pull values
off the stack without disturbing normal program execu-
tion is a desirable option. To push the current PC value
onto the stack, a PUSH instruction can be executed.
This will increment the stack pointer and load the cur-
rent PC value onto the stack. TOSU, TOSH and TOSL
can then be modified to place a return address on the
stack.
The ability to pull the TOS value off of the stack and
replace it with the value that was previously pushed
onto the stack, without disturbing normal execution, is
achieved by using the POP instruction. The POP instruc-
tion discards the current TOS by decrementing the
stack pointer. The previous value pushed onto the
stack then becomes the TOS value.
DS39564C-page 38
bit 7
bit 6
bit 5
bit 4-0
PUSH AND POP INSTRUCTIONS
(1)
(1)
TOSU
RETURN ADDRESS STACK AND ASSOCIATED REGISTERS
STKPTR REGISTER
0x00
bit 7
STKOVF: Stack Full Flag bit
1 = Stack became full or overflowed
0 = Stack has not become full or overflowed
STKUNF: Stack Underflow Flag bit
1 = Stack underflow occurred
0 = Stack underflow did not occur
Unimplemented: Read as '0'
SP4:SP0: Stack Pointer Location bits
Legend:
R = Readable bit
- n = Value at POR
STKOVF
R/C-0
Note 1: Bit 7 and bit 6 can only be cleared in user software or by a POR.
STKUNF
TOSH
0x1A
R/C-0
Top of Stack
TOSL
U-0
0x34
—
W = Writable bit
’1’ = Bit is set
Return Address Stack
R/W-0
SP4
0x001A34
0x000D58
4.2.4
These resets are enabled by programming the
STVREN configuration bit. When the STVREN bit is
disabled, a full or underflow condition will set the appro-
priate STKFUL or STKUNF bit, but not cause a device
RESET. When the STVREN bit is enabled, a full or
underflow will set the appropriate STKFUL or STKUNF
bit and then cause a device RESET. The STKFUL or
STKUNF bits are only cleared by the user software or
a POR Reset.
R/W-0
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
SP3
STACK FULL/UNDERFLOW RESETS
11111
11110
11101
00011
00010
00001
00000
STKPTR<4:0>
R/W-0
SP2
© 2006 Microchip Technology Inc.
00010
x = Bit is unknown
R/W-0
SP1
R/W-0
SP0
bit 0
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