PIC18F66K22-I/PT Microchip Technology, PIC18F66K22-I/PT Datasheet - Page 235
PIC18F66K22-I/PT
Manufacturer Part Number
PIC18F66K22-I/PT
Description
64kB Flash, 4kB RAM, 1kB EE, NanoWatt XLP, GP 64 TQFP 10x10x1mm TRAY
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC18F66K22-IPT.pdf
(548 pages)
2.PIC18F66K22-IPT.pdf
(548 pages)
3.PIC18F66K22-IPT.pdf
(8 pages)
Specifications of PIC18F66K22-I/PT
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
64KB (32K 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 ~ 85°C
Package / Case
64-TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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18.1.4
RTCWREN (RTCCFG<5>) must be set before a write
to RTCEN can take place. Any write to the RTCEN bit,
while RTCWREN = 0, will be ignored.
Like the RTCEN bit, the RTCVALH and RTCVALL
registers can only be written to when RTCWREN = 1.
A write to these registers, while RTCWREN = 0, will be
ignored.
FIGURE 18-2:
FIGURE 18-3:
2010 Microchip Technology Inc.
RTCEN BIT WRITE
0-9
0-2
0-2
(24-hour format)
(24-hour format)
Hours
Hours
Year
TIMER DIGIT FORMAT
ALARM DIGIT FORMAT
0-9
0-9
0-9
0-5
0-1
0-5
0-1
Minutes
Minutes
Month
Month
Preliminary
0-9
0-9
0-9
0-9
PIC18F87K22 FAMILY
18.2
18.2.1
The register interface for the RTCC and alarm values is
implemented using the Binary Coded Decimal (BCD)
format. This simplifies the firmware when using the
module, as each of the digits is contained within its own
4-bit value (see Figure 18-2 and Figure 18-3).
0-5
0-3
0-5
0-3
Seconds
Seconds
Operation
Day
Day
REGISTER INTERFACE
0-9
0-9
0-9
0-9
1/2 Second Bit
Day Of Week
(binary format)
Day Of Week
DS39960B-page 235
0-6
0-6
0/1
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