PIC18C658 MICROCHIP [Microchip Technology], PIC18C658 Datasheet - Page 113
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PIC18C658
Manufacturer Part Number
PIC18C658
Description
High-Performance Microcontrollers with CAN Module
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18C658.pdf
(366 pages)
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10.0
The Timer0 module has the following features:
• Software selectable as an 8-bit or 16-bit
• Readable and writable
• Dedicated 8-bit software programmable prescaler
• Clock source selectable to be external or internal
• Interrupt on overflow from FFh to 00h in 8-bit
• Edge select for external clock
REGISTER 10-1:
2000 Microchip Technology Inc.
timer/counter
mode and FFFFh to 0000h in 16-bit mode
TIMER0 MODULE
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
bit 7
TMR0ON: Timer0 On/Off Control bit
1 = Enables Timer0
0 = Stops Timer0
T08BIT: Timer0 8-bit/16-bit Control bit
1 = Timer0 is configured as an 8-bit timer/counter
0 = Timer0 is configured as a 16-bit timer/counter
T0CS: Timer0 Clock Source Select bit
1 = Transition on T0CKI pin
0 = Internal instruction cycle clock (CLKOUT)
T0SE: Timer0 Source Edge Select bit
1 = Increment on high-to-low transition on T0CKI pin
0 = Increment on low-to-high transition on T0CKI pin
PSA: Timer0 Prescaler Assignment bit
1 = TImer0 prescaler is NOT assigned. Timer0 clock input bypasses prescaler.
0 = Timer0 prescaler is assigned. Timer0 clock input comes from prescaler output.
T0PS2:T0PS0: Timer0 Prescaler Select bits
111 = 1:256 prescale value
110 = 1:128 prescale value
101 = 1:64 prescale value
100 = 1:32 prescale value
011 = 1:16 prescale value
010 = 1:8 prescale value
001 = 1:4 prescale value
000 = 1:2 prescale value
Legend:
R = Readable bit
- n = Value at POR
T0CON REGISTER
TMR0ON
R/W-1
T08BIT
R/W-1
Advanced Information
R/W-1
T0CS
W = Writable bit
’1’ = Bit is set
R/W-1
T0SE
Register 10-1 shows the Timer0 Control register
(T0CON).
Figure 10-1 shows a simplified block diagram of the
Timer0 module in 8-bit mode and Figure 10-1 shows a
simplified block diagram of the Timer0 module in 16-bit
mode.
The T0CON register is a readable and writable register
that controls all the aspects of Timer0, including the
prescale selection.
Note:
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
Timer0 is enabled on POR.
R/W-1
PSA
T0PS2
R/W-1
PIC18CXX8
x = Bit is unknown
T0PS1
R/W-1
DS30475A-page 113
T0PS0
R/W-1
bit 0
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