PIC18F4431-I/PT Microchip Technology Inc., PIC18F4431-I/PT Datasheet - Page 111

• Manufacturer Part Number: PIC18F4431-I/PT
• Description: Microcontroller; 16 KB Flash; 768 RAM; 256 EEPROM; 36 I/O; 44-Pin TQFP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F4431-I/PT

• A/d Inputs: 9-Channel, 10-Bit
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 36
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 44-pin TQFP
• Programmable Memory: 16K Bytes
• Ram Size: 768 Bytes
• Speed: 40 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 10-5:
 2003 Microchip Technology Inc.
Note 1: Open-drain usually available on RA4 has been removed for this device.
BLOCK DIAGRAM OF RA4
WR TRISA
WR LATA
or
PORTA
Data
Bus
RD TRISA
To CAP3/QEB
Data Latch
RD PORTA
To A/D Converter
D
D
TRIS Latch
CK
CK
RD LATA
PIC18F2331/2431/4331/4431
Q
Q
Q
Q
Preliminary
Q
Analog
Input
Mode
EN
D
V
V
P
N
DD
SS
TTL
Input
Buffer
Schmitt
Trigger
Input
Buffer
RA4
DS39616B-page 109
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