PIC16C54-XT/SO Microchip Technology, PIC16C54-XT/SO Datasheet - Page 34
![IC MCU OTP 512X12 18SOIC](/photos/6/76/67656/150-18-soic_sml.jpg)
PIC16C54-XT/SO
Manufacturer Part Number
PIC16C54-XT/SO
Description
IC MCU OTP 512X12 18SOIC
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheet
1.PIC16LC58B-04P.pdf
(194 pages)
Specifications of PIC16C54-XT/SO
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-SOIC (7.5mm Width)
Controller Family/series
PIC16C
No. Of I/o's
12
Ram Memory Size
25Byte
Cpu Speed
4MHz
No. Of Timers
1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT18SO-1 - SOCKET TRANSITION 18SOIC 300MIL309-1075 - ADAPTER 18-SOIC TO 18-SOIC309-1011 - ADAPTER 18-SOIC TO 18-DIP309-1010 - ADAPTER 18-SOIC TO 18-DIPAC164002 - MODULE SKT PROMATEII 18/28SOIC
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16C54-XT/SO
Manufacturer:
MIC
Quantity:
20 000
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- Download datasheet (3Mb)
PIC16C5X
6.5.1
If the Program Counter is pointing to the last address of
a selected memory page, when it increments it will
cause the program to continue in the next higher page.
However, the page preselect bits in the STATUS Reg-
ister will not be updated. Therefore, the next GOTO,
CALL or modify PCL instruction will send the program
to the page specified by the page preselect bits (PA0 or
PA<1:0>).
For example, a NOP at location 1FFh (page 0) incre-
ments the PC to 200h (page 1). A GOTO xxx at 200h
will return the program to address xxh on page 0
(assuming that PA<1:0> are clear).
To prevent this, the page preselect bits must be
updated under program control.
6.5.2
The Program Counter is set upon a RESET, which
means that the PC addresses the last location in the
last page (i.e., the RESET vector).
The STATUS Register page preselect bits are cleared
upon a RESET, which means that page 0 is pre-
selected.
Therefore, upon a RESET, a GOTO instruction at the
RESET vector location will automatically cause the pro-
gram to jump to page 0.
6.6
PIC16C5X devices have a 10-bit or 11-bit wide, two-
level hardware push/pop stack.
A CALL instruction will push the current value of stack
1 into stack 2 and then push the current program
counter value, incremented by one, into stack level 1. If
more than two sequential CALL’s are executed, only
the most recent two return addresses are stored.
A RETLW instruction will pop the contents of stack level
1 into the program counter and then copy stack level 2
contents into level 1. If more than two sequential
RETLW’s are executed, the stack will be filled with the
address previously stored in level 2. Note that the
W Register will be loaded with the literal value specified
in the instruction. This is particularly useful for the
implementation of data look-up tables within the pro-
gram memory.
For the RETLW instruction, the PC is loaded with the
Top of Stack (TOS) contents. All of the devices covered
in this data sheet have a two-level stack. The stack has
the same bit width as the device PC, therefore, paging
is not an issue when returning from a subroutine.
DS30453D-page 32
Stack
PAGING CONSIDERATIONS –
PIC16C56/CR56, PIC16C57/CR57
AND PIC16C58/CR58
EFFECTS OF RESET
Preliminary
2002 Microchip Technology Inc.
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