PIC14000-04/SO Microchip Technology, PIC14000-04/SO Datasheet - Page 79

• Manufacturer Part Number: PIC14000-04/SO
• Description: IC MCU OTP 4KX14 A/D 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 14r

Specifications of PIC14000-04/SO

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 20
• Program Memory Type: OTP
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: Slope A/D
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC14
• No. Of I/o's: 22
• Ram Memory Size: 192Byte
• Cpu Speed: 4MHz
• No. Of Timers: 2
• Interface: I2C
• Embedded Interface Type: I2C
• Rohs Compliant: Yes
• Processor Series: PIC14000
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: SPI, UART
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 1
• Operating Supply Voltage: 2.7 V to 6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ICE2000
• Minimum Operating Temperature: 0 C
• On-chip Adc: 16 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMING309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

TABLE 10-3:
10.4
The PIC14000 contains an integrated low-voltage
detector. The supply voltage is divided and compared
to the bandgap reference output. If the supply voltage
(V
will cause LVD (PCON<0>) to be reset. This bit can be
read by software to determine if a low voltage condition
occurred. This bit must be set by software.
The nominal values of the low-voltage detector trip
points are as follows:
• V
• V
• Hysteresis (V
10.5
10.5.1
A Power-on Reset pulse is generated on-chip when
V
take advantage of the POR, just tie the MCLR pin
directly (or through a resistor) to V
nate external RC components usually needed to create
a Power-on Reset. A maximum rise time for V
specified. See Electrical Specifications for details.
When the device starts normal operation (exits the
reset condition), device operating parameters (voltage,
frequency, temperature, ...) must be met to ensure
operation. If these conditions are not met, the device
must be held in reset until the operating conditions are
met.
For additional information, refer to Application Note
AN607, “ Power-up Trouble Shooting .”
DD
1996 Microchip Technology Inc.
DD
TRIP
TRIP
) falls below V
rise is detected (in the range of 1.5V - 2.1V). To
POR
0
0
0
1
1
1
1
- = 2.55V
+ = 2.60V
Low-Voltage Detector
Power-on Reset (POR), Power-up
Timer (PWRT) and Oscillator Start-up
Timer (OST)
POWER-ON RESET (POR)
TRIP
STATUS BITS AND THEIR SIGNIFICANCE
TRIP
+ – V
TO
1
0
X
0
0
1
1
-, then the low-voltage detector
TRIP
-) = 55 mV
PD
1
X
0
1
0
1
0
DD
. This will elimi-
Power-On Reset
Illegal, TO is set on POR
Illegal, PD is set on POR
WDT reset during normal operation
WDT time-out wakeup from sleep
MCLR reset during normal operation
MCLR reset during SLEEP or HIBERNATE, or interrupt wake-up from
SLEEP or HIBERNATE.
DD
Preliminary
is
10.5.2
The Power-up Timer provides a fixed 72 ms (nominal)
time-out on power-up only, from POR. The power-up
timer operates from a local internal oscillator. The chip
is kept in reset as long as PWRT is active. The PWRT
delay allows the V
configuration bit, PWRTE, can disable (if set, or unpro-
grammed) or enable (if cleared, or programmed) the
power-up timer.
The power-up timer delay will vary from chip to chip
and due to V
10.5.3
The Oscillator Start-up Timer (OST) provides 1024
oscillator cycles (from OSC1 input) delay after the
PWRT delay is over. This guarantees that the crystal
oscillator or resonator has started and stabilized.
10.5.4
There is an 8-cycle delay in IN mode to ensure stability
only after a Power-on Reset (POR) or wake-up from
SLEEP.
POWER-UP TIMER (PWRT)
OSCILLATOR START-UP TIMER (OST)
IN OSCILLATOR START-UP
Meaning
DD
and temperature.
DD
to rise to an acceptable level. A
PIC14000
DS40122B-page 79