PIC16F627A-I/P Microchip Technology Inc., PIC16F627A-I/P Datasheet - Page 46
PIC16F627A-I/P
Manufacturer Part Number
PIC16F627A-I/P
Description
18 PIN, 1.75 KB FLASH, 224 RAM, 16 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F627A-IP.pdf
(170 pages)
Specifications of PIC16F627A-I/P
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
128 Bytes
Input Output
16
Interface
SCI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
1.75K Bytes
Ram Size
224 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F627A-I/P
Manufacturer:
ROHM
Quantity:
15 600
Part Number:
PIC16F627A-I/P
Manufacturer:
MICROCHIP原装
Quantity:
20 000
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PIC16F62X
6.3
An 8-bit counter is available as a prescaler for the
Timer0 module, or as a postscaler for the Watchdog
Timer. A prescaler assignment for the Timer0 module
means that there is no postscaler for the Watchdog
Timer, and vice-versa.
FIGURE 6-1:
DS40300C-page 44
WDT Enable bit
T0CKI
Watchdog
Pin
Note 1: T0SE, T0CS, PSA, PS0-PS2 are bits in the Option Register.
Timer
Timer0 Prescaler
F
OSC
/4
T0SE
BLOCK DIAGRAM OF THE TIMER0/WDT
0
1
PSA
.
T0CS
0
1
WDT Postscaler/
TMR0 Prescaler
0
Timeout
WDT
Preliminary
8-to-1MUX
8
1
1
0
PSA
The PSA and PS2:PS0 bits (OPTION<3:0>) determine
the prescaler assignment and prescale ratio.
When assigned to the Timer0 module, all instructions
writing
MOVWF 1, BSF 1, x....etc.) will clear the pres-
caler. When assigned to WDT, a CLRWDT instruction
will clear the prescaler along with the Watchdog Timer.
The prescaler is not readable or writable.
PSA
to
PS0 - PS2
Cycles
SYNC
2
the
TMR0
2003 Microchip Technology Inc.
TMR0 reg
register
Data Bus
8
Set Flag Bit T0IF
(e.g.,
on Overflow
CLRF 1,
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