PIC12HV609T-I/MS Microchip Technology, PIC12HV609T-I/MS Datasheet - Page 127

• Manufacturer Part Number: PIC12HV609T-I/MS
• Description: 1.75KB Flash, 64B RAM, 6 I/O, 8MHz Internal Oscillator 8 MSOP 3x3mm T/R
• Manufacturer: Microchip Technology
• Series: PIC® 12Fr

Specifications of PIC12HV609T-I/MS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 5
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: FLASH
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Processor Series: PIC12H
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 64 B
• Interface Type: RS- 232 , USB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC12HV609T-I/MSTR

13.0
The PIC12HV609/HV615 devices include a permanent
internal 5 volt (nominal) shunt regulator in parallel with
the V
voltage
unregulated supply. All external devices connected
directly to the V
voltage and contribute to the total V
(I
13.1
A shunt regulator generates a specific supply voltage
by creating a voltage drop across a pass resistor R
The voltage at the V
monitored and compared to an internal voltage refer-
ence. The current through the resistor is then adjusted,
based on the result of the comparison, to produce a
voltage drop equal to the difference between the supply
voltage V
See Figure 13-1 for voltage regulator schematic.
FIGURE 13-1:
 2010 Microchip Technology Inc.
LOAD
C
I
SUPPLY
BYPASS
DD
).
pin. This eliminates the need for an external
VOLTAGE REGULATOR
Regulator Operation
regulator
UNREG
V
UNREG
R
SER
I
DD
SHUNT
and the V
pin will share the regulated supply
in
DD
VOLTAGE REGULATOR
systems
pin of the microcontroller is
DD
of the microcontroller.
PIC12F609/615/617/12HV609/615
Device
Feedback
sourced
DD
I
supply current
LOAD
by
V
V
DD
SS
SER
an
.
An external current limiting resistor, R
between the unregulated supply, V
pin, drops the difference in voltage between V
and V
defined by Equation 13-1.
EQUATION 13-1:
13.2
The supply voltage V
constant. Therefore, the current range of the regulator
is limited. Selecting a value for R
three factors into consideration.
Since the regulator uses the band gap voltage as the
regulated voltage reference, this voltage reference is
permanently enabled in the PIC12HV609/HV615
devices.
The shunt regulator will still consume current when
below operating voltage range for the shunt regulator.
13.3
For more information on using the shunt regulator and
managing current load, see Application Note AN1035,
“Designing with HV Microcontrollers” (DS01035).
Where:
R
R
VU
VU
V
I
1.05
0.95
LOAD
DD
MAX
MIN
MIN
MAX
DD
. R
Regulator Considerations
Design Considerations
= maximum value of R
= minimum value of R
= minimum value of V
= maximum value of V
= regulated voltage (5V nominal)
= maximum expected load current in mA
= compensation for +5% tolerance of R
= compensation for -5% tolerance of R
R
R
SER
including I/O pin currents and external
circuits connected to V
MAX
MIN
must be between R
=
=
1.05 • (4
UNREG
0.95 • (50
R
(VU
(VU
SER
MAX
MIN
M
and load current are not
LIMITING RESISTOR
A + I
- 5V)
- 5V)
M
UNREG
SER
UNREG
SER
A)
SER
UNREG
LOAD
DD
DS41302D-page 127
(ohms)
MAX
(ohms)
.
must take these
)
, and the V
SER
and R
, located
UNREG
MIN
SER
SER
DD
as