PIC12C508A-04I/P Microchip Technology, PIC12C508A-04I/P Datasheet - Page 35

• Manufacturer Part Number: PIC12C508A-04I/P
• Description: IC MCU OTP 512X12 8DIP
• Manufacturer: Microchip Technology
• Series: PIC® 12Cr

Specifications of PIC12C508A-04I/P

• Program Memory Type: OTP
• Program Memory Size: 768B (512 x 12)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 5
• Ram Size: 25 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC12C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 25 B
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 1
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: DVMCPA, ICE2000
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMINGDVMCPA - KIT DVR BOARD EVAL SYSTEM MXDEV1DVA12XP080 - ADAPTER DEVICE FOR MPLAB-ICEAC124001 - MODULE SKT PROMATEII 8DIP/SOIC
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

8.0
What sets a microcontroller apart from other
processors are special circuits to deal with the needs
of real-time applications. The PIC12C5XX family of
microcontrollers has a host of such features intended
to maximize system reliability, minimize cost through
elimination of external components, provide power
saving operating modes and offer code protection.
These features are:
• Oscillator selection
• Reset
• Watchdog Timer (WDT)
• SLEEP
• Code protection
• ID locations
• In-circuit Serial Programming
FIGURE 8-1:
- Power-On Reset (POR)
- Device Reset Timer (DRT)
- Wake-up from SLEEP on pin change
1999 Microchip Technology Inc.
bit 11-5: Unimplemented
bit 4:
bit 3:
bit 2:
bit 1-0:
Note 1: Refer to the PIC12C5XX Programming Specifications to determine how to access the
bit11
—
SPECIAL FEATURES OF THE
CPU
MCLRE: MCLR enable bit.
1 = MCLR pin enabled
0 = MCLR tied to V
CP: Code protection bit.
1 = Code protection off
0 = Code protection on
WDTE: Watchdog timer enable bit
1 = WDT enabled
0 = WDT disabled
FOSC1:FOSC0: Oscillator selection bits
11 = EXTRC - external RC oscillator
10 = INTRC - internal RC oscillator
01 = XT oscillator
00 = LP oscillator
configuration word. This register is not user addressable during device operation.
—
10
CONFIGURATION WORD FOR PIC12C5XX
—
9
—
8
DD
, (Internally)
—
7
—
6
—
5
MCLRE
4
The PIC12C5XX has a Watchdog Timer which can be
shut off only through configuration bit WDTE. It runs
off of its own RC oscillator for added reliability. If using
XT or LP selectable oscillator options, there is always
an 18 ms (nominal) delay provided by the Device
Reset Timer (DRT), intended to keep the chip in reset
until the crystal oscillator is stable. If using INTRC or
EXTRC there is an 18 ms delay only on V
With this timer on-chip, most applications need no
external reset circuitry.
The SLEEP mode is designed to offer a very low
current power-down mode. The user can wake-up
from SLEEP through a change on input pins or
through a Watchdog Timer time-out. Several oscillator
options are also made available to allow the part to fit
the application, including an internal 4 MHz oscillator.
The EXTRC oscillator option saves system cost while
the LP crystal option saves power. A set of
configuration bits are used to select various options.
8.1
The PIC12C5XX configuration word consists of 12
bits. Configuration bits can be programmed to select
various device configurations. Two bits are for the
selection of the oscillator type, one bit is the Watchdog
Timer enable bit, and one bit is the MCLR enable bit.
CP
3
WDTE FOSC1 FOSC0
Configuration Bits
2
1
PIC12C5XX
bit0
Register:
Address
DS40139E-page 35
(1)
DD
:
CONFIG
power-up.
FFFh