AC162078 Microchip Technology, AC162078 Datasheet - Page 107
AC162078
Manufacturer Part Number
AC162078
Description
HEADER INTRFC MPLAB ICD2 18F1330
Manufacturer
Microchip Technology
Datasheet
1.AC162078.pdf
(318 pages)
Specifications of AC162078
Accessory Type
Transition Header
Lead Free Status / RoHS Status
Not applicable / Not applicable
For Use With/related Products
ICD2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Not applicable / Not applicable
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12.0
The Timer0 module has the following features:
• Software selectable as an 8-bit or
• 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 12-1:
2009 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
16-bit timer/counter
mode and FFFFh to 0000h in 16-bit mode
TMR0ON
R/W-1
TIMER0 MODULE
TMR0ON: Timer0 On/Off Control bit
1 = Enables Timer0
0 = Stops Timer0
T016BIT: Timer0 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 input edge
0 = Internal clock (F
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
001 = 1:4
000 = 1:2
T016BIT
R/W-1
T0CON: TIMER0 CONTROL REGISTER
Prescale value
Prescale value
Prescale value
W = Writable bit
‘1’ = Bit is set
R/W-1
T0CS
OSC
/4)
R/W-1
T0SE
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
Figure 12-1 shows a simplified block diagram of the
Timer0 module in 8-bit mode and Figure 12-2 shows a
simplified block diagram of the Timer0 module in 16-bit
mode.
The T0CON register (Register 12-1) is a readable and
writable register that controls all the aspects of Timer0,
including the prescale selection.
PSA
PIC18F1230/1330
T0PS2
R/W-1
x = Bit is unknown
T0PS1
R/W-1
DS39758D-page 107
T0PS0
R/W-1
bit 0
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