PIC12F609-I/MS Microchip Technology, PIC12F609-I/MS Datasheet - Page 121
![IC PIC MCU FLASH 1KX14 8MSOP](/photos/6/59/65932/mfg_150_c04-111_ms_8-msop_sml.jpg)
PIC12F609-I/MS
Manufacturer Part Number
PIC12F609-I/MS
Description
IC PIC MCU FLASH 1KX14 8MSOP
Manufacturer
Microchip Technology
Series
PIC® 12Fr
Datasheets
1.PIC12F609T-ISN.pdf
(212 pages)
2.PIC12F609T-ISN.pdf
(8 pages)
3.PIC12F609T-ISN.pdf
(26 pages)
4.PIC12F609T-ISN.pdf
(8 pages)
Specifications of PIC12F609-I/MS
Core Size
8-Bit
Program Memory Size
1.75KB (1K x 14)
Core Processor
PIC
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
5
Program Memory Type
FLASH
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Controller Family/series
PIC12
No. Of I/o's
6
Ram Memory Size
64Byte
Cpu Speed
20MHz
No. Of Timers
2
Digital Ic Case Style
MSOP
Processor Series
PIC12F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
64 B
Interface Type
RS- 232 , USB
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
5
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Details
- PIC12F609T-ISN PDF datasheet
- PIC12F609T-ISN PDF datasheet #2
- PIC12F609T-ISN PDF datasheet #3
- PIC12F609T-ISN PDF datasheet #4
- Current page: 121 of 212
- Download datasheet (2Mb)
12.5
During an interrupt, only the return PC value is saved
on the stack. Typically, users may wish to save key
registers during an interrupt (e.g., W and STATUS
registers). This must be implemented in software.
Temporary
STATUS_TEMP should be placed in the last 16 bytes
of GPR (see Figure 2-3). These 16 locations are
common to all banks and do not require banking. This
makes context save and restore operations simpler.
The code shown in Example 12-1 can be used to:
• Store the W register
• Store the STATUS register
• Execute the ISR code
• Restore the Status (and Bank Select Bit register)
• Restore the W register
EXAMPLE 12-1:
12.6
The Watchdog Timer is a free running, on-chip RC
oscillator, which requires no external components. This
RC oscillator is separate from the external RC oscillator
of the CLKIN pin and INTOSC. That means that the
WDT will run, even if the clock on the OSC1 and OSC2
pins of the device has been stopped (for example, by
execution of a SLEEP instruction). During normal oper-
ation, a WDT time out generates a device Reset. If the
device is in Sleep mode, a WDT time out causes the
device to wake-up and continue with normal operation.
The WDT can be permanently disabled by program-
ming
(Section 12.1 “Configuration Bits”).
2010 Microchip Technology Inc.
Note:
MOVWF
SWAPF
MOVWF
:
:(ISR)
:
SWAPF
MOVWF
SWAPF
SWAPF
the
Context Saving During Interrupts
Watchdog Timer (WDT)
The
does not require saving the PCLATH.
However, if computed GOTOs are used in
both the ISR and the main code, the
PCLATH must be saved and restored in
the ISR.
Configuration
holding
W_TEMP
STATUS,W
STATUS_TEMP
STATUS_TEMP,W
STATUS
W_TEMP,F
W_TEMP,W
PIC12F609/615/617/12HV609/615
SAVING STATUS AND W REGISTERS IN RAM
registers
bit,
PIC12F609/615/617/12HV609/615
WDTE,
W_TEMP
;Copy W to TEMP register
;Swap status to be saved into W
;Swaps are used because they do not affect the status bits
;Save status to bank zero STATUS_TEMP register
;Insert user code here
;Swap STATUS_TEMP register into W
;(sets bank to original state)
;Move W into STATUS register
;Swap W_TEMP
;Swap W_TEMP into W
as
clear
and
12.6.1
The WDT has a nominal time-out period of 18 ms (with
no prescaler). The time-out periods vary with
temperature, V
part (see DC specs). If longer time-out periods are
desired, a prescaler with a division ratio of up to 1:128
can be assigned to the WDT under software control by
writing to the OPTION register. Thus, time-out periods
up to 2.3 seconds can be realized.
The CLRWDT and SLEEP instructions clear the WDT
and the prescaler, if assigned to the WDT, and prevent
it from timing out and generating a device Reset.
The TO bit in the STATUS register will be cleared upon
a Watchdog Timer time out.
WDT PERIOD
DD
and process variations from part to
DS41302D-page 121
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