PIC16C55-XTI/SS Microchip Technology, PIC16C55-XTI/SS Datasheet - Page 27

• Manufacturer Part Number: PIC16C55-XTI/SS
• Description: IC MCU OTP 512X12 28SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C55-XTI/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 20
• Program Memory Size: 768B (512 x 12)
• Program Memory Type: OTP
• Ram Size: 24 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6.25 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SSOP
• For Use With: 309-1026 - ADAPTER 28-SSOP TO 28-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

6.0
PIC16C5X memory is organized into program memory
and data memory. For devices with more than 512
bytes of program memory, a paging scheme is used.
Program memory pages are accessed using one or two
STATUS Register bits. For devices with a data memory
register file of more than 32 registers, a banking
scheme is used. Data memory banks are accessed
using the File Selection Register (FSR).
6.1
The PIC16C54, PIC16CR54 and PIC16C55 have a 9-
bit Program Counter (PC) capable of addressing a 512
x 12 program memory space (Figure 6-1). The
PIC16C56 and PIC16CR56 have a 10-bit Program
Counter (PC) capable of addressing a 1K x 12 program
memory
PIC16C58 and PIC16CR58 have an 11-bit Program
Counter capable of addressing a 2K x 12 program
memory space (Figure 6-3). Accessing a location
above the physically implemented address will cause a
wraparound.
A NOP at the RESET vector location will cause a restart
at location 000h. The RESET vector for the PIC16C54,
PIC16CR54 and PIC16C55 is at 1FFh. The RESET
vector for the PIC16C56 and PIC16CR56 is at 3FFh.
The RESET vector for the PIC16C57, PIC16CR57,
PIC16C58, and PIC16CR58 is at 7FFh. See
Section 6.5 for additional information using CALL and
GOTO instructions.
FIGURE 6-1:
2002 Microchip Technology Inc.
CALL, RETLW
MEMORY ORGANIZATION
Program Memory Organization
space
(Figure 6-2).
RESET Vector
Stack Level 1
Stack Level 2
PIC16C54/CR54/C55
PROGRAM MEMORY MAP
AND STACK
Program
PC<8:0>
On-chip
Memory
The
9
PIC16CR57,
000h
0FFh
100h
1FFh
Preliminary
FIGURE 6-2:
FIGURE 6-3:
CALL, RETLW
CALL, RETLW
Memory (Page 0)
Memory (Page 0)
Memory (Page 1)
Memory (Page 2)
Memory (Page 3)
On-chip Program
Memory (Page 1)
On-chip Program
On-chip Program
On-chip Program
On-chip Program
On-chip Program
RESET Vector
RESET Vector
Stack Level 1
Stack Level 2
Stack Level 1
Stack Level 2
PIC16C56/CR56
PROGRAM MEMORY MAP
AND STACK
PIC16C57/CR57/C58/
CR58 PROGRAM
MEMORY MAP AND
STACK
PC<10:0>
PC<9:0>
PIC16C5X
10
11
DS30453D-page 25
000h
0FFh
100h
1FFh
200h
2FFh
300h
3FFh
000h
0FFh
100h
1FFh
200h
2FFh
300h
3FFh
400h
4FFh
500h
5FFh
600h
6FFh
700h
7FFh