PIC18F85K22-I/PT Microchip Technology, PIC18F85K22-I/PT Datasheet - Page 429

• 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

28.6.2
The entire data EEPROM is protected from external
reads and writes by two bits: CPD and WRTD. CPD
inhibits external reads and writes of data EEPROM.
WRTD inhibits internal and external writes to data
EEPROM. The CPU can always read data EEPROM
under normal operation, regardless of the protection bit
settings.
28.6.3
The Configuration registers can be write-protected.
The WRTC bit controls protection of the Configuration
registers. In normal Execution mode, the WRTC bit is
readable only. WRTC can only be written via ICSP or
an external programmer.
28.7
Eight memory locations (200000h-200007h) are
designated as ID locations, where the user can store
checksum or other code identification numbers. These
locations are both readable and writable, during normal
execution, through the TBLRD and TBLWT instructions
or during program/verify. The ID locations can be read
when the device is code-protected.
 2009-2011 Microchip Technology Inc.
ID Locations
DATA EEPROM
CODE PROTECTION
CONFIGURATION REGISTER
PROTECTION
PIC18F87K22 FAMILY
28.8
The PIC18F87K22 family of devices can be serially
programmed while in the end application circuit. This is
simply done with two lines for clock and data, and three
other lines for power, ground and the programming
voltage. This allows customers to manufacture boards
with unprogrammed devices and then program the
microcontroller just before shipping the product. This
also allows the most recent firmware or a custom
firmware to be programmed.
For the various Programming modes, see the device
programming specification.
28.9
When the DEBUG Configuration bit is programmed to
a ‘ 0 ’, the In-Circuit Debugger (ICD) functionality is
enabled. This function allows simple debugging
functions when used with MPLAB
microcontroller has this feature enabled, some
resources are not available for general use.
shows which resources are required by the background
debugger.
TABLE 28-5:
To use the In-Circuit Debugger function of the micro-
controller, the design must implement In-Circuit Serial
Programming connections to MCLR/RG5/V
V
Debugger module, available from Microchip or one of
the third-party development tool companies.
I/O Pins:
Stack:
Program Memory:
Data Memory:
SS
, RB7 and RB6. This will interface to the In-Circuit
In-Circuit Debugger
In-Circuit Serial Programming
DEBUGGER RESOURCES
RB6, RB7
Two levels
512 bytes
10 bytes
DS39960D-page 429
®
IDE. When the
Table 28-5
PP
, V
DD
,