PIC18F67K90-E/PT Microchip Technology, PIC18F67K90-E/PT Datasheet - Page 199
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PIC18F67K90-E/PT
Manufacturer Part Number
PIC18F67K90-E/PT
Description
128kB Flash, 4kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm TRAY
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F66K90-IMR.pdf
(570 pages)
Specifications of PIC18F67K90-E/PT
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F67K90-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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14.0
The Timer2 module incorporates the following features:
• 8-bit Timer and Period registers (TMR2 and PR2,
• Both registers are readable and writable
• Software programmable prescaler
• Software programmable postscaler
• Interrupt on TMR2 to PR2 match
• Optional use as the shift clock for the
This module is controlled through the T2CON register
(Register
configures the prescaler and postscaler. Timer2 can be
shut off by clearing control bit, TMR2ON (T2CON<2>),
to minimize power consumption.
A simplified block diagram of the module is shown in
Figure
14.1
In normal operation, TMR2 is incremented from 00h on
each clock (F
clock input gives the prescale options of direct input,
divide-by-4 or divide-by-16. These are selected by the
prescaler control bits, T2CKPS<1:0> (T2CON<1:0>).
REGISTER 14-1:
2009-2011 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6-3
bit 2
bit 1-0
respectively)
(1:1, 1:4 and 1:16)
(1:1 through 1:16)
MSSP modules
U-0
—
14-1.
TIMER2 MODULE
Timer2 Operation
14-1) that enables or disables the timer, and
OSC
Unimplemented: Read as ‘0’
T2OUTPS<3:0>: Timer2 Output Postscale Select bits
0000 = 1:1 Postscale
0001 = 1:2 Postscale
•
•
•
1111 = 1:16 Postscale
TMR2ON: Timer2 On bit
1 = Timer2 is on
0 = Timer2 is off
T2CKPS<1:0>: Timer2 Clock Prescale Select bits
00 = Prescaler is 1
01 = Prescaler is 4
1x = Prescaler is 16
T2OUTPS3
/4). A 4-bit counter/prescaler on the
R/W-0
T2CON: TIMER2 CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
T2OUTPS2
R/W-0
T2OUTPS1
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
PIC18F87K90 FAMILY
T2OUTPS0
R/W-0
The value of TMR2 is compared to that of the Period reg-
ister, PR2, on each clock cycle. When the two values
match, the comparator generates a match signal as the
timer output. This signal also resets the value of TMR2
to 00h on the next cycle and drives the output counter/
postscaler. (See
The TMR2 and PR2 registers are both directly readable
and writable. The TMR2 register is cleared on any
device Reset, while the PR2 register initializes at FFh.
Both the prescaler and postscaler counters are cleared
on the following events:
• A write to the TMR2 register
• A write to the T2CON register
• Any device Reset (Power-on Reset (POR), MCLR
TMR2 is not cleared when T2CON is written.
Reset, Watchdog Timer Reset (WDTR) or
Brown-out Reset [BOR])
Note:
The CCP and ECCP modules use Timers,
1 through 8, for some modes. The assign-
ment of a particular timer to a CCP/ECCP
module is determined by the Timer to CCP
enable bits in the CCPTMRSx registers.
For more details, see
Register 18-3
TMR2ON
R/W-0
Section 14.2 “Timer2
x = Bit is unknown
and
T2CKPS1
R/W-0
Register
DS39957D-page 199
Interrupt”.)
Register
19-2.
T2CKPS0
R/W-0
18-2,
bit 0
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