PIC16C54-XT/P Microchip Technology, PIC16C54-XT/P Datasheet - Page 49

• Manufacturer Part Number: PIC16C54-XT/P
• Description: IC MCU OTP 512X12 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C54-XT/P

• Core Size: 8-Bit
• Program Memory Size: 768B (512 x 12)
• Core Processor: PIC
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 12
• Program Memory Type: OTP
• Ram Size: 25 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6.25 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-DIP (0.300", 7.62mm)
• Controller Family/series: PIC16C
• No. Of I/o's: 12
• Ram Memory Size: 25Byte
• Cpu Speed: 4MHz
• No. Of Timers: 1
• Package: 18PDIP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 4 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• Core: PIC
• Processor Series: PIC16C
• Maximum Clock Frequency: 40 MHz
• Data Ram Size: 25 B
• Data Rom Size: 512 B
• Mounting Style: Through Hole
• Height: 3.3 mm
• Length: 22.86 mm
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Supply Voltage (max): 6.25 V
• Supply Voltage (min): 3 V
• Width: 6.35 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

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