PIC18F85K22-I/PT Microchip Technology, PIC18F85K22-I/PT Datasheet - Page 197

• Manufacturer Part Number: PIC18F85K22-I/PT
• Description: IC, 8BIT MCU, PIC18F, 64MHZ, TQFP-80
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F85K22-I/PT

• Controller Family/series: PIC18
• No. Of I/o's: 69
• Eeprom Memory Size: 1KB
• Ram Memory Size: 2KB
• Cpu Speed: 64MHz
• No. Of Timers: 8
• Core Size: 8 Bit
• Program Memory Size: 32KB
• Core Processor: PIC
• Speed: 64MHz
• Connectivity: EBI/EMI, I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

14.0
The Timer1 timer/counter module incorporates these
features:
• Software-selectable operation as a 16-bit timer or
• Readable and writable 8-bit registers (TMR1H
• Selectable clock source (internal or external) with
• Interrupt-on-overflow
• Reset on ECCP Special Event Trigger
• Timer with gated control
REGISTER 14-1:
 2009-2011 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-6
bit 5-4
bit 3
bit 2
bit 1
bit 0
Note 1:
TMR1CS1
counter
and TMR1L)
device clock or SOSC oscillator internal options
R/W-0
TIMER1 MODULE
The F
TMR1CS<1:0>: Timer1 Clock Source Select bits
10 = Timer1 clock source is either from a pin or oscillator, depending on the SOSCEN bit:
SOSCEN = 0:
External clock from the T1CKI pin (on the rising edge).
SOSCEN = 1:
Depending on the SOSCSEL Configuration bit, the clock source is either a crystal oscillator on the
SOSCI/SOSCO pins or an internal clock from the SCLKI pin.
01 = Timer1 clock source is the system clock (F
00 = Timer1 clock source is the instruction clock (F
T1CKPS<1:0>: Timer1 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
SOSCEN: SOSC Oscillator Enable bit
1 = SOSC is enabled and available for Timer1
0 = SOSC is disabled for Timer1
The oscillator inverter and feedback resistor are turned off to eliminate power drain.
T1SYNC: Timer1 External Clock Input Synchronization Select bit
TMR1CS<1:0> = 10:
1 = Do not synchronize external clock input
0 = Synchronize external clock input
TMR1CS<1:0> = 0x:
This bit is ignored. Timer1 uses the internal clock when TMR1CS<1:0> = 1x.
RD16: 16-Bit Read/Write Mode Enable bit
1 = Enables register read/write of Timer1 in one 16-bit operation
0 = Enables register read/write of Timer1 in two 8-bit operations
TMR1ON: Timer1 On bit
1 = Enables Timer1
0 = Stops Timer1
TMR1CS0
OSC
R/W-0
clock source should not be selected if the timer will be used with the ECCP capture/compare features.
T1CON: TIMER1 CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
T1CKPS1
R/W-0
T1CKPS0
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
PIC18F87K22 FAMILY
SOSCEN
Figure 14-1
Timer1 module.
The Timer1 oscillator can also be used as a low-power
clock source for the microcontroller in power-managed
operation. The Timer1 can also work on the SOSC
oscillator.
Timer1 is controlled through the T1CON Control
register
Oscillator Enable bit (SOSCEN). Timer1 can be
enabled or disabled by setting or clearing control bit,
TMR1ON (T1CON<0>).
The F
ECCP capture/compare features. If the timer will be
used with the capture or compare features, always
select one of the other timer clocking options.
OSC
R/W-0
OSC
)
(1)
OSC
/4)
(Register
clock source should not be used with the
displays a simplified block diagram of the
T1SYNC
R/W-0
14-1). It also contains the Secondary
x = Bit is unknown
R/W-0
RD16
DS39960D-page 197
TMR1ON
R/W-0
bit 0