PIC18F1320-H/ML Microchip Technology, PIC18F1320-H/ML Datasheet - Page 35
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC18F1320-H/ML
Manufacturer Part Number
PIC18F1320-H/ML
Description
IC MCU 8BIT 8KB FLASH 28QFN
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheet
1.PIC18F1220-ISO.pdf
(308 pages)
Specifications of PIC18F1320-H/ML
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 7x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 150°C
Package / Case
28-VQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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4.0
The PIC18F1220/1320 devices differentiate between
various kinds of Reset:
a)
b)
c)
d)
e)
f)
g)
h)
Most registers are unaffected by a Reset. Their status
is unknown on POR and unchanged by all other
Resets. The other registers are forced to a “Reset
state”, depending on the type of Reset that occurred.
FIGURE 4-1:
© 2007 Microchip Technology Inc.
OSC1
MCLR
V
Note 1: This is a separate oscillator from the RC oscillator of the CLKI pin.
Power-on Reset (POR)
MCLR Reset during normal operation
MCLR Reset during Sleep
Watchdog Timer (WDT) Reset (during
execution)
Programmable Brown-out Reset (BOR)
RESET Instruction
Stack Full Reset
Stack Underflow Reset
DD
RESET
Instruction
2: See Table 4-1 for time-out situations.
INTRC
RESET
OST/PWRT
Pointer
32 μs
Stack
( )_IDLE
Brown-out
Time-out
V
(1)
Detect
Sleep
DD
WDT
Reset
Rise
OST
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
PWRT
Stack Full/Underflow Reset
External Reset
MCLRE
10-bit Ripple Counter
11-bit Ripple Counter
POR Pulse
BOR
1024 Cycles
65.5 ms
Most registers are not affected by a WDT wake-up,
since this is viewed as the resumption of normal
operation. Status bits from the RCON register
(Register 4-1), RI, TO, PD, POR and BOR, are set or
cleared differently in different Reset situations, as
indicated in Table 4-2. These bits are used in software
to determine the nature of the Reset. See Table 4-3 for
a full description of the Reset states of all registers.
A simplified block diagram of the On-Chip Reset Circuit
is shown in Figure 4-1.
The Enhanced MCU devices have a MCLR noise filter
in the MCLR Reset path. The filter will detect and
ignore small pulses.
The MCLR pin is not driven low by any internal Resets,
including the WDT.
The MCLR input provided by the MCLR pin can be
disabled with the MCLRE bit in Configuration
Register 3H (CONFIG3H<7>).
PIC18F1220/1320
S
R
DS39605F-page 33
Q
Enable OST
Enable PWRT
Chip_Reset
(2)
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