PIC16C432-I/SS Microchip Technology, PIC16C432-I/SS Datasheet - Page 32

IC MCU CMOS 8BIT 20MHZ 2K 20SSOP

PIC16C432-I/SS

Manufacturer Part Number
PIC16C432-I/SS
Description
IC MCU CMOS 8BIT 20MHZ 2K 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets

Specifications of PIC16C432-I/SS

Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
LIN (Local Interconnect Network)
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
12
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
OTP
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SSOP
For Use With
AC164029 - MODULE SKT PROMATEII 20DIP/SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
PIC16C432
6.3
An 8-bit counter is available as a prescaler for the
Timer0 module, or as a postscaler for the Watchdog
Timer, respectively (Figure 6-6). For simplicity, this
counter is being referred to as “prescaler” throughout
this data sheet. Note that there is only one prescaler
available, which is mutually exclusive between the
Timer0 module and the Watchdog Timer. Thus, a
prescaler assignment for the Timer0 module means
that there is no prescaler for the Watchdog Timer and
vice-versa.
FIGURE 6-6:
DS41140B-page 30
CLKOUT (= F
WDT Enable bit
T0CKI
Watchdog
pin
Note 1: T0SE, T0CS, PSA, PS<2:0> are bits in the OPTION register.
Timer
Prescaler
OSC
/4)
T0SE
BLOCK DIAGRAM OF THE TIMER0/WDT PRESCALER
0
1
PSA
M
U
X
0
1
T0CS
M
U
X
0
8-bit Prescaler
8-to-1MUX
Timeout
8
M U X
WDT
Preliminary
1
0
1
PSA
M
U
X
The PSA and PS<2:0> bits (OPTION<3:0>) determine
the prescaler assignment and prescale ratio.
When assigned to the Timer0 module, all instructions
writing to the TMR0 register (i.e., CLRF 1, MOVWF 1,
BSF 1,x....etc.) will clear the prescaler. When
assigned to WDT, a CLRWDT instruction will clear the
prescaler along with the Watchdog Timer. The
prescaler is not readable or writable.
PSA
PS<2:0>
Cycles
SYNC
2
2002 Microchip Technology Inc.
TMR0 reg
Data Bus
8
Set Flag bit T0IF
on Overflow

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