PIC18C252-I/SO Microchip Technology, PIC18C252-I/SO Datasheet - Page 181

• Manufacturer Part Number: PIC18C252-I/SO
• Description: IC MCU OTP 16KX16 A/D 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C252-I/SO

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC18
• No. Of I/o's: 24
• Ram Memory Size: 1536Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Interface: I2C, SPI, USART
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 23
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 4
• Embedded Interface Type: I2C, SPI, USART
• Rohs Compliant: Yes
• Processor Series: PIC18C
• Core: PIC
• Data Ram Size: 1536 B
• Maximum Clock Frequency: 40 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: ICE2000, DM163022, DV164136
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MILI3DB18C452 - BOARD DAUGHTER ICEPIC3309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

18.0
There are several features intended to maximize sys-
tem reliability, minimize cost through elimination of
external components, provide power saving operating
modes and offer code protection. These are:
• OSC Selection
• RESET
• Interrupts
• Watchdog Timer (WDT)
• SLEEP
• Code Protection
• ID Locations
• In-circuit Serial Programming
All PIC18CXX2 devices have a Watchdog Timer, which
is permanently enabled via the configuration bits or
software-controlled. It runs off its own RC oscillator for
added reliability. There are two timers that offer neces-
sary delays on power-up. One is the Oscillator Start-up
Timer (OST), intended to keep the chip in RESET until
the crystal oscillator is stable. The other is the Power-
up Timer (PWRT), which provides a fixed delay on
power-up only, designed to keep the part in RESET
while the power supply stabilizes. With these two tim-
ers on-chip, most applications need no external
RESET circuitry.
TABLE 18-1:
Legend: x = unknown, u = unchanged, - = unimplemented, q = value depends on condition.
3FFFFEh DEVID1
3FFFFFh DEVID2
300000h
300001h
300002h
300003h
300005h
300006h
- Power-on Reset (POR)
- Power-up Timer (PWRT)
- Oscillator Start-up Timer (OST)
- Brown-out Reset (BOR)
2000 Microchip Technology Inc.
File Name
SPECIAL FEATURES OF THE
CPU
Shaded cells are unimplemented, read as ‘0’
CONFIG1L
CONFIG1H
CONFIG2L
CONFIG2H
CONFIG3H
CONFIG4L
CONFIGURATION BITS AND DEVICE IDS
DEV10
DEV2
Bit 7
CP
—
—
—
—
—
DEV1
DEV9
Bit 6
CP
—
—
—
—
—
OSCSEN
DEV0
DEV8
Bit 5
CP
—
—
—
—
REV4
DEV7
Bit 4
CP
—
—
—
—
—
WDTPS2
BORV1
REV3
DEV6
Bit 3
SLEEP mode is designed to offer a very low current
Power-down mode. The user can wake-up from
SLEEP through external RESET, Watchdog Timer
Wake-up or through an interrupt. Several oscillator
options are also made available to allow the part to fit
the application. The RC oscillator option saves system
cost, while the LP crystal option saves power. A set of
configuration bits are used to select various options.
18.1
The configuration bits can be programmed (read as '0'),
or left unprogrammed (read as '1'), to select various
device configurations. These bits are mapped starting
at program memory location 300000h.
The user will note that address 300000h is beyond the
user program memory space. In fact, it belongs to the
configuration memory space (300000h - 3FFFFFh),
which can only be accessed using table reads and
table writes.
CP
—
—
—
WDTPS1
FOSC2
BORV0
Configuration Bits
REV2
DEV5
Bit 2
CP
—
—
WDTPS0
BODEN
FOSC1
LVEN
REV1
DEV4
Bit 1
CP
—
PIC18CXX2
PWRTEN
CCP2MX
STVREN
WDTEN
FOSC0
REV0
DEV3
Bit 0
CP
DS39026C-page 179
Unprogrammed
1111 1111
111- -111
---- 1111
---- 1111
---- ---1
---- --11
0000 0000
0000 0010
Default/
Value