PIC16C558-04/SS Microchip Technology, PIC16C558-04/SS Datasheet - Page 20
![IC MCU OTP 2KX14 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16C558-04/SS
Manufacturer Part Number
PIC16C558-04/SS
Description
IC MCU OTP 2KX14 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16C558-04/SS
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
13
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
OTP
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
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PIC16C55X
4.2.2.2
The OPTION register is a readable and writable
register which contains various control bits to configure
the TMR0/WDT prescaler, the external RB0/INT
interrupt, TMR0 and the weak pull-ups on PORTB.
REGISTER 4-2:
DS40143D-page 18
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
OPTION Register
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
bit7
Legend:
R = Readable bit
- n = Value at POR reset
OPTION REGISTER (ADDRESS 81H)
R/W-1
RBPU
Bit Value
000
001
010
011
100
101
110
111
INTEDG
R/W-1
TMR0 Rate
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
R/W-1
T0CS
Preliminary
W = Writable bit
’1’ = Bit is set
WDT Rate
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
R/W-1
T0SE
Note 1: To achieve a 1:1 prescaler assignment for
R/W-1
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
PSA
TMR0, assign the prescaler to the WDT
(PSA = 1).
R/W-1
PS2
2002 Microchip Technology Inc.
x = Bit is unknown
R/W-1
PS1
R/W-1
PS0
bit0
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