PIC16C56A-20E/SO Microchip Technology, PIC16C56A-20E/SO Datasheet - Page 28
![IC MCU OTP 1KX12 18SOIC](/photos/6/76/67656/150-18-soic_sml.jpg)
PIC16C56A-20E/SO
Manufacturer Part Number
PIC16C56A-20E/SO
Description
IC MCU OTP 1KX12 18SOIC
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16C56A-20E/SO
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
POR, WDT
Number Of I /o
12
Program Memory Size
1.5KB (1K x 12)
Program Memory Type
OTP
Ram Size
25 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
18-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
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PIC16C5X
6.2
Data memory is composed of registers, or bytes of
RAM. Therefore, data memory for a device is specified
by its register file. The register file is divided into two
functional groups: Special Function Registers and
General Purpose Registers.
The Special Function Registers include the TMR0 reg-
ister, the Program Counter (PC), the Status Register,
the I/O registers (ports) and the File Select Register
(FSR). In addition, Special Purpose Registers are used
to control the I/O port configuration and prescaler
options.
The General Purpose Registers are used for data and
control information under command of the instructions.
For the PIC16C54, PIC16CR54, PIC16C56 and
PIC16CR56, the register file is composed of 7 Special
Function Registers and 25 General Purpose Registers
(Figure 6-4).
For the PIC16C55, the register file is composed of 8
Special Function Registers and 24 General Purpose
Registers.
For the PIC16C57 and PIC16CR57, the register file is
composed of 8 Special Function Registers, 24 General
Purpose Registers and up to 48 additional General
Purpose Registers that may be addressed using a
banking scheme (Figure 6-5).
For the PIC16C58 and PIC16CR58, the register file is
composed of 7 Special Function Registers, 25 General
Purpose Registers and up to 48 additional General
Purpose Registers that may be addressed using a
banking scheme (Figure 6-6).
6.2.1
The register file is accessed either directly or indirectly
through the File Select Register (FSR). The FSR Reg-
ister is described in Section 6.7.
DS30453D-page 26
Data Memory Organization
GENERAL PURPOSE REGISTER
FILE
Preliminary
FIGURE 6-4:
Note 1: Not a physical register. See
File Address
2: PIC16C55 only, in all other devices this
Section 6.7.
is implemented as a a general purpose
register.
1Fh
00h
01h
02h
03h
04h
05h
06h
07h
08h
PIC16C54, PIC16CR54,
PIC16C55, PIC16C56,
PIC16CR56 REGISTER
FILE MAP
Registers
2002 Microchip Technology Inc.
PORTC
Purpose
General
STATUS
PORTB
PORTA
INDF
TMR0
PCL
FSR
(1)
(2)
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