PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 144
PIC18F6621-I/PT
Manufacturer Part Number
PIC18F6621-I/PT
Description
64 PIN, 64 KB FLASH, 3840 RAM, 52 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F6621-IPT.pdf
(396 pages)
Specifications of PIC18F6621-I/PT
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
1024 Bytes
Input Output
54
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
64-pin TQFP
Programmable Memory
64K Bytes
Ram Size
3.8K Bytes
Speed
40 MHz
Timers
2-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
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Company:
Part Number:
PIC18F6621-I/PT
Manufacturer:
Microchip Technology
Quantity:
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Part Number:
PIC18F6621-I/PT
Manufacturer:
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20 000
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PIC18F6525/6621/8525/8621
13.2
The Timer2 module has an 8-bit period register, PR2.
Timer2 increments from 00h until it matches PR2 and
then resets to 00h on the next increment cycle. PR2 is
a readable and writable register. The PR2 register is
initialized to FFh upon Reset.
FIGURE 13-1:
TABLE 13-1:
DS39612B-page 142
INTCON GIE/GIEH PEIE/GIEL
PIR1
PIE1
IPR1
TMR2
T2CON
PR2
Legend:
Note 1:
Name
Timer2 Interrupt
Timer2 Module Register
Timer2 Period Register
PSPIE
PSPIP
PSPIF
Note 1: TMR2 register output can be software selected by the MSSP module as a baud clock.
x = unknown, u = unchanged, — = unimplemented, read as ‘0’. Shaded cells are not used by the Timer2 module.
Enabled only in Microcontroller mode for PIC18F8525/8621 devices.
Bit 7
F
—
OSC
(1)
(1)
(1)
/4
REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER
T2OUTPS3 T2OUTPS2 T2OUTPS1 T2OUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000
ADIE
ADIP
ADIF
TIMER2 BLOCK DIAGRAM
Bit 6
T2CKPS1:T2CKPS0
1:1, 1:4, 1:16
Prescaler
TMR0IE
RC1IF
RC1IE
RC1IP
Bit 5
2
INT0IE
TX1IF
TX1IE
TX1IP
Bit 4
Comparator
TMR2
PR2
SSPIF
SSPIE
SSPIP
RBIE
Bit 3
13.3
The output of TMR2 (before the postscaler) is fed to the
synchronous serial port module which optionally uses it
to generate the shift clock.
EQ
Reset
T2OUTPS3:T2OUTPS0
TMR0IF
CCP1IE
CCP1IP
CCP1IF
Bit 2
Postscaler
1:1 to 1:16
Output of TMR2
Output
TMR2IF
TMR2IE
TMR2IP
TMR2
INT0IF
4
Bit 1
(1)
TMR1IF 0000 0000 0000 0000
TMR1IE 0000 0000 0000 0000
TMR1IP 1111 1111 1111 1111
RBIF
Bit 0
2005 Microchip Technology Inc.
bit TMR2IF
0000 000x 0000 000u
0000 0000 0000 0000
1111 1111 1111 1111
Sets Flag
POR, BOR
Value on
Value on
all other
Resets
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