Datasheet
© 2007 Microchip Technology Inc. DS41239D-page 41
PIC10F200/202/204/206
9.0 SPECIAL FEATURES OF THE
CPU
What sets a microcontroller apart from other proces-
sors are special circuits that deal with the needs of real-
time applications. The PIC10F200/202/204/206
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:
- 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
• Sleep
• Code Protection
• ID Locations
• In-Circuit Serial Programming™
•Clock Out
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
DD power-up. 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, wake-up from
comparator change, or through a Watchdog Timer
time-out.
9.1 Configuration Bits
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).
REGISTER 9-1: CONFIGURATION WORD FOR PIC10F200/202/204/206
(1), (2)
— — — — — — — MCLRE CP WDTE — —
bit 11 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 11-5 Unimplemented: Read as ‘0’
bit 4 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 VDD
bit 3 CP: Code Protection bit
1 = Code protection off
0 = Code protection on
bit 2 WDTE: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
bit 1-0 Reserved: Read as ‘0’
Note 1: 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.
2: INTRC is the only oscillator mode offered on the PIC10F200/202/204/206.