PIC16C54C-04/P Microchip Technology Inc., PIC16C54C-04/P Datasheet - Page 49

• Manufacturer Part Number: PIC16C54C-04/P
• Description: 18 PIN, 0.75 KB OTP, 25 RAM, 12 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C54C-04/P

• Cpu Speed: 10 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 12
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 18-pin PDIP
• Programmable Memory: 0.75K Bytes
• Ram Size: 25 Bytes
• Speed: 4 MHz
• Timers: 1- 8-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

9.3
A device may be powered down (SLEEP) and later
powered up (Wake-up from SLEEP).
9.3.1
The Power-down mode is entered by executing a
SLEEP instruction.
If enabled, the Watchdog Timer will be cleared but
keeps running, the TO bit (STATUS<4>) is set, the PD
bit (STATUS<3>) is cleared and the oscillator driver is
turned off. The I/O ports maintain the status they had
before the SLEEP instruction was executed (driving
high, driving low, or hi-impedance).
It should be noted that a RESET generated by a WDT
time-out does not drive the MCLR/V
For lowest current consumption while powered down,
the T0CKI input should be at V
MCLR/V
(MCLR = V
9.3.2
The device can wake up from SLEEP through one of
the following events:
1.
2.
Both of these events cause a device RESET. The TO
and PD bits can be used to determine the cause of
device RESET. The TO bit is cleared if a WDT time-
out occurred (and caused wake-up). The PD bit, which
is set on power-up, is cleared when SLEEP is invoked.
The WDT is cleared when the device wakes from
SLEEP, regardless of the wake-up source.
2002 Microchip Technology Inc.
An external RESET input on MCLR/V
A Watchdog Timer Time-out Reset (if WDT was
enabled).
PP
Power-Down Mode (SLEEP)
IH
pin must be at a logic high level
SLEEP
WAKE-UP FROM SLEEP
).
DD
PP
or V
pin low.
PP
SS
pin.
and the
Preliminary
9.4
If the code protection bit(s) have not been pro-
grammed, the on-chip program memory can be read
out for verification purposes.
9.5
Four memory locations are designated as ID locations
where the user can store checksum or other code-iden-
tification numbers. These locations are not accessible
during normal execution but are readable and writable
during program/verify.
Use only the lower 4 bits of the ID locations and always
program the upper 8 bits as ’1’s.
Note:
Note:
Program Verification/Code
Protection
ID Locations
Microchip does not recommend code pro-
tecting windowed devices.
Microchip will assign a unique pattern
number for QTP and SQTP requests and
for ROM devices. This pattern number will
be unique and traceable to the submitted
code.
PIC16C5X
DS30453D-page 47