PIC18F2320-I/SO Microchip Technology Inc., PIC18F2320-I/SO Datasheet - Page 131
![no-image](/images/manufacturer_photos/0/4/440/microchip_technology_inc__sml.jpg)
PIC18F2320-I/SO
Manufacturer Part Number
PIC18F2320-I/SO
Description
Microcontroller; 8 KB Flash; 512 RAM; 256 EEPROM; 25 I/O; 28-Pin-SOIC
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F2320-ISO.pdf
(388 pages)
Specifications of PIC18F2320-I/SO
A/d Inputs
10-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
25
Interface
I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
28-pin SOIC
Programmable Memory
8K Bytes
Ram Size
512 Bytes
Speed
20 MHz
Timers
1-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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14.0
The Timer3 module timer/counter has the following
features:
• 16-bit timer/counter (two 8-bit registers: TMR3H
• Readable and writable (both registers)
• Internal or external clock select
• Interrupt-on-overflow from FFFFh to 0000h
• Reset from CCP module trigger
REGISTER 14-1:
2003 Microchip Technology Inc.
and TMR3L)
TIMER3 MODULE
bit 7
bit 6, 3 T3CCP2:T3CCP1: Timer3 and Timer1 to CCPx Enable bits
bit 5-4
bit 2
bit 1
bit 0
T3CON: TIMER3 CONTROL REGISTER
RD16: 16-bit Read/Write Mode Enable bit
1 = Enables register read/write of Timer3 in one 16-bit operation
0 = Enables register read/write of Timer3 in two 8-bit operations
1x = Timer3 is the clock source for compare/capture CCP modules
01 = Timer3 is the clock source for compare/capture of CCP2,
00 = Timer1 is the clock source for compare/capture CCP modules
T3CKPS1:T3CKPS0: Timer3 Input Clock Prescale Select bits
11 = 1:8 prescale value
10 = 1:4 prescale value
01 = 1:2 prescale value
00 = 1:1 prescale value
T3SYNC: Timer3 External Clock Input Synchronization Control bit
(Not usable if the system clock comes from Timer1/Timer3.)
When TMR3CS = 1:
1 = Do not synchronize external clock input
0 = Synchronize external clock input
When TMR3CS = 0:
This bit is ignored. Timer3 uses the internal clock when TMR3CS = 0.
TMR3CS: Timer3 Clock Source Select bit
1 = External clock input from Timer1 oscillator or T1CKI (on the rising edge after the first
0 = Internal clock (F
TMR3ON: Timer3 On bit
1 = Enables Timer3
0 = Stops Timer3
bit 7
Legend:
R = Readable bit
- n = Value at POR
R/W-0
RD16
falling edge)
Timer1 is the clock source for compare/capture of CCP1
T3CCP2
R/W-0
OSC
PIC18F2220/2320/4220/4320
T3CKPS1
/4)
R/W-0
W = Writable bit
‘1’ = Bit is set
T3CKPS0
R/W-0
Figure 14-1 is a simplified block diagram of the Timer3
module.
Register 14-1 shows the Timer3 Control register. This
register controls the operating mode of the Timer3
module and sets the CCP clock source.
Register 12-1 shows the Timer1 Control register. This
register controls the operating mode of the Timer1
module, as well as contains the Timer1 Oscillator
Enable bit (T1OSCEN) which can be a clock source for
Timer3.
T3CCP1
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
T3SYNC
R/W-0
TMR3CS
x = Bit is unknown
R/W-0
DS39599C-page 129
TMR3ON
R/W-0
bit 0
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