PIC18F27J53T-I/ML Microchip Technology, PIC18F27J53T-I/ML Datasheet - Page 201
![IC MCU 8BIT 128KB FLASH 28QFN](/photos/29/8/290841/qfn-28_sml.jpg)
PIC18F27J53T-I/ML
Manufacturer Part Number
PIC18F27J53T-I/ML
Description
IC MCU 8BIT 128KB FLASH 28QFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Specifications of PIC18F27J53T-I/ML
Program Memory Type
FLASH
Program Memory Size
128KB (64K x 16)
Package / Case
*
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, LIN, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2.15 V ~ 3.6 V
Data Converters
A/D 10x10b/12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3.8 KB
Interface Type
I2C, SPI, USART
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
16
Number Of Timers
8
Operating Supply Voltage
2.15 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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11.4
This section introduces some potential applications for
the PMP module.
FIGURE 11-27:
11.4.2
Partial multiplexing implies using more pins; however,
for a few extra pins, some extra performance can be
achieved. Figure 11-28 provides an example of a
memory or peripheral that is partially multiplexed with
FIGURE 11-28:
FIGURE 11-29:
2010 Microchip Technology Inc.
Application Examples
PIC18F
PIC18F
PIC18F
PARTIALLY MULTIPLEXED
MEMORY OR PERIPHERAL
PMD<7:0>
PMD<7:0>
PMD<7:0>
PMCSx
PMALH
PMCSx
PMALL
PMALL
PMWR
PMWR
PMCSx
PMRD
PMALL
PMRD
PMWR
PMRD
MULTIPLEXED ADDRESSING APPLICATION EXAMPLE
EXAMPLE OF A PARTIALLY MULTIPLEXED ADDRESSING APPLICATION
EXAMPLE OF AN 8-BIT MULTIPLEXED ADDRESS AND DATA APPLICATION
AD<7:0>
ALE
CS
RD
WR
373
373
373
Parallel Peripheral
Preliminary
A<15:8>
A<7:0>
D<7:0>
D<7:0>
A<7:0>
PIC18F47J53 FAMILY
11.4.1
Figure 11-27 demonstrates the hookup of a memory or
another addressable peripheral in Full Multiplex mode.
Consequently, this mode achieves the best pin saving
from the microcontroller perspective. However, for this
configuration, there needs to be some external latches
to maintain the address.
an external latch. If the peripheral has internal latches,
as displayed in Figure 11-29, then no extra circuitry is
required except for the peripheral itself.
MULTIPLEXED MEMORY OR
PERIPHERAL
A<7:0>
D<7:0>
CE
A<13:0>
D<7:0>
CE
OE
OE
WR
WR
Address Bus
Data Bus
Control Lines
Address Bus
Data Bus
Control Lines
Address Bus
Data Bus
Control Lines
DS39964B-page 201
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