PIC16C642-04I/SO Microchip Technology, PIC16C642-04I/SO Datasheet - Page 44
![IC MCU OTP 4KX14 COMP 28SOIC](/photos/6/59/65909/150-28-soic_sml.jpg)
PIC16C642-04I/SO
Manufacturer Part Number
PIC16C642-04I/SO
Description
IC MCU OTP 4KX14 COMP 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16C642-04I/SO
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
Brown-out Detect/Reset, LED, POR, WDT
Number Of I /o
22
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
176 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Processor Series
PIC16C
Core
PIC
Data Bus Width
8 bit
Data Ram Size
176 B
Interface Type
RS- 232
Maximum Clock Frequency
4 MHz
Number Of Programmable I/os
33
Number Of Timers
8
Operating Supply Voltage
3 V to 6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000, DM163022
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
Data Rom Size
176 B
Height
2.05 mm
Length
17.9 mm
Supply Voltage (max)
6 V
Supply Voltage (min)
4 V
Width
7.5 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16C642-04I/SO
Manufacturer:
MIC
Quantity:
20 000
PIC16C64X & PIC16C66X
6.3
An 8-bit counter is available as a prescaler for the
Timer0 module or as a postscaler for the Watchdog
Timer (WDT), respectively (Figure 6-6). For simplicity,
this counter is being referred to as “prescaler” through-
out this data sheet. Note that the prescaler may be
used by either the Timer0 module or the Watchdog
Timer, but not both. Thus, a prescaler assignment for
the Timer0 module means that there is no prescaler for
the Watchdog Timer, and vice-versa.
FIGURE 6-6:
DS30559A-page 44
RA4/T0CKI
Note: T0CS, T0SE, PSA, PS2:PS0 are (OPTION<5:0>).
CLKOUT (=Fosc/4)
WDT Enable bit
pin
Watchdog
Timer
Prescaler
BLOCK DIAGRAM OF THE TIMER0/WDT PRESCALER
T0SE
0
1
PSA
M
U
X
0
1
T0CS
M
U
X
0
8-bit Prescaler
8 - to - 1MUX
Time-out
8
M U X
WDT
Preliminary
1
0
1
PSA
M
U
X
The PSA and PS2:PS0 bits (OPTION<3:0>) determine
the prescaler assignment and prescale ratio.
When assigned to the Timer0 module, all instructions
writing to the TMR0 register (e.g., CLRF 1, MOVWF 1,
BSF
assigned to Watchdog Timer, a CLRWDT instruction will
clear the prescaler count along with the Watchdog
Timer. The prescaler is not readable or writable.
PSA
PS2:PS0
1,x ) will clear the prescaler count. When
Cycles
SYNC
2
1996 Microchip Technology Inc.
TMR0 reg
Data Bus
8
Set flag bit T0IF
on Overflow