PIC16F74-I/P Microchip Technology, PIC16F74-I/P Datasheet - Page 101

IC MCU FLASH 4KX14 A/D 40DIP

PIC16F74-I/P

Manufacturer Part Number
PIC16F74-I/P
Description
IC MCU FLASH 4KX14 A/D 40DIP
Manufacturer
Microchip Technology
Series
PIC® 16Fr

Specifications of PIC16F74-I/P

Core Size
8-Bit
Program Memory Size
7KB (4K x 14)
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Core Processor
PIC
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Number Of I /o
33
Program Memory Type
FLASH
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Controller Family/series
PIC16F
No. Of I/o's
33
Ram Memory Size
192Byte
Cpu Speed
20MHz
No. Of Timers
3
Package
40PDIP
Device Core
PIC
Family Name
PIC16
Maximum Speed
20 MHz
Operating Supply Voltage
5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
33
Interface Type
I2C/SPI/USART
On-chip Adc
8-chx8-bit
Number Of Timers
3
Processor Series
PIC16F
Core
PIC
Data Ram Size
192 B
Maximum Clock Frequency
20 MHz
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000, DM163022
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
444-1001 - DEMO BOARD FOR PICMICRO MCU
Eeprom Size
-
Lead Free Status / Rohs Status
 Details

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6.2.6
1997 Microchip Technology Inc.
Program Memory Paging
Some devices have program memory sizes greater then 2K words, but the CALL and GOTO
instructions only have a 11-bit address range. This 11-bit address range allows a branch within
a 2K program memory page size. To allow CALL and GOTO instructions to address the entire 1K
program memory address range, there must be another two bits to specify the program memory
page. These paging bits come from the PCLATH<4:3> bits
GOTO instruction, the user must ensure that page bits (PCLATH<4:3>) are programmed so that
the desired program memory page is addressed
tions is executed, the entire 13-bit PC is POPed from the stack. Therefore, manipulation of the
PCLATH<4:3> is not required for the return instructions.
Example 6-1
assumes that PCLATH is saved and restored by the interrupt service routine (if interrupts are
used).
Example 6-1: Call of a Subroutine in Page1 from Page0
SUB1_P1:
Note:
ORG 0x500
BSF
CALL
ORG 0x900
RETURN
:
:
:
Section 6. Memory Organization
Devices with program memory sizes 2K words and less, ignore both paging bits
(PCLATH<4:3>), which are used to access program memory when more than one
page is available. The use of PCLATH<4:3> as general purpose read/write bits (for
these devices) is not recommended since this may affect upward compatibility with
future products.
Devices with program memory sizes between 2K words and 4K words, ignore the
paging bit (PCLATH<4>), which is used to access program memory pages 2 and 3
(1000h - 1FFFh). The use of PCLATH<4> as a general purpose read/write bit (for
these devices) is not recommended since this may affect upward compatibility with
future products.
shows the calling of a subroutine in page 1 of the program memory. This example
PCLATH,3
SUB1_P1
; Select Page1 (800h-FFFh)
; Call subroutine in Page1 (800h-FFFh)
;
;
;
; called subroutine Page1 (800h-FFFh)
;
; return to Call subroutine in Page0 (000h-7FFh)
;
(Figure
6-2). When one of the return instruc-
(Figure
6-2). When doing a CALL or
DS31006A-page 6-7
6

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