PIC10F202 Microchip Technology Inc., PIC10F202 Datasheet - Page 43

• Manufacturer Part Number: PIC10F202
• Description: 6-pin, 8-bit Flash Microcontrollers Data Sheet
• Manufacturer: Microchip Technology Inc.

9.0
What sets a microcontroller apart from other proces-
sors are special circuits that deal with the needs of real-
time
microcontrollers have 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:
• Reset:
• Sleep
• Code Protection
• ID Locations
• In-Circuit Serial Programming™
• Clock Out
REGISTER 9-1:
© 2007 Microchip Technology Inc.
bit 11
Legend:
R = Readable bit
-n = Value at POR
bit 11-5 Unimplemented: Read as ‘0’
bit 4
bit 3
bit 2
bit 1-0
Note 1:
- Power-on Reset (POR)
- Device Reset Timer (DRT)
- Watchdog Timer (WDT)
- Wake-up from Sleep on pin change
- Wake-up from Sleep on comparator change
—
2:
applications.
SPECIAL FEATURES OF THE
CPU
MCLRE: GP3/MCLR Pin Function Select bit
1 = GP3/MCLR pin function is MCLR
0 = GP3/MCLR pin function is digital I/O, MCLR internally 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
Reserved: Read as ‘0’
Refer to the “PIC10F200/202/204/206 Memory Programming Specifications” (DS41228) to determine how
to access the Configuration Word. The Configuration Word is not user addressable during device
operation.
INTRC is the only oscillator mode offered on the PIC10F200/202/204/206.
—
CONFIGURATION WORD FOR PIC10F200/202/204/206
The
—
PIC10F200/202/204/206
—
W = Writable bit
‘1’ = Bit is set
—
—
PIC10F200/202/204/206
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
—
The PIC10F200/202/204/206 devices have a Watch-
dog Timer, which can be shut off only through Configu-
ration bit WDTE. It runs off of its own RC oscillator for
added reliability. When using INTRC, there is an 18 ms
delay only on V
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, wake-up from
comparator change, or through a Watchdog Timer
time-out.
9.1
The PIC10F200/202/204/206 Configuration Words
consist of 12 bits. Configuration bits can be pro-
grammed to select various device configurations. One
bit is the Watchdog Timer enable bit, one bit is the
MCLR enable bit and one bit is for code protection (see
Register 9-1).
MCLRE
Configuration Bits
DD
DD
CP
power-up. With this timer on-chip,
(1), (2)
x = Bit is unknown
WDTE
DS41239D-page 41
—
—
bit 0