PIC16F84A-04/P Microchip Technology Inc., PIC16F84A-04/P Datasheet - Page 11
![no-image](/images/manufacturer_photos/0/4/440/microchip_technology_inc__sml.jpg)
PIC16F84A-04/P
Manufacturer Part Number
PIC16F84A-04/P
Description
18 PIN, 1.75 KB FLASH, 68 RAM, 13 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F84A-04P.pdf
(88 pages)
Specifications of PIC16F84A-04/P
Cpu Speed
5 MIPS
Eeprom Memory
64 Bytes
Input Output
13
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
1.75K Bytes
Ram Size
68 Bytes
Speed
20 MHz
Timers
1-8-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F84A-04/P
Manufacturer:
MICROCHIP
Quantity:
1 450
2.3.2
The OPTION register is a readable and writable
register which contains various control bits to configure
the TMR0/WDT prescaler, the external INT interrupt,
TMR0, and the weak pull-ups on PORTB.
REGISTER 2-2:
2001 Microchip Technology Inc.
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
OPTION REGISTER
OPTION REGISTER (ADDRESS 81h)
RBPU: PORTB Pull-up Enable bit
1 = PORTB pull-ups are disabled
0 = PORTB pull-ups are enabled by individual port latch values
INTEDG: Interrupt Edge Select bit
1 = Interrupt on rising edge of RB0/INT pin
0 = Interrupt on falling edge of RB0/INT pin
T0CS: TMR0 Clock Source Select bit
1 = Transition on RA4/T0CKI pin
0 = Internal instruction cycle clock (CLKOUT)
T0SE: TMR0 Source Edge Select bit
1 = Increment on high-to-low transition on RA4/T0CKI pin
0 = Increment on low-to-high transition on RA4/T0CKI pin
PSA: Prescaler Assignment bit
1 = Prescaler is assigned to the WDT
0 = Prescaler is assigned to the Timer0 module
PS2:PS0: Prescaler Rate Select bits
Bit Value TMR0 Rate WDT Rate
bit 7
Legend:
R = Readable bit
- n = Value at POR
R/W-1
RBPU
000
001
010
011
100
101
110
111
INTEDG
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
R/W-1
R/W-1
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
T0CS
W = Writable bit
’1’ = Bit is set
R/W-1
T0SE
Note:
R/W-1
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
PSA
When the prescaler is assigned to
the WDT (PSA = ’1’), TMR0 has a 1:1
prescaler assignment.
R/W-1
PS2
PIC16F84A
x = Bit is unknown
R/W-1
PS1
DS35007B-page 9
R/W-1
PS0
bit 0