PIC18F442-I/PT Microchip Technology Inc., PIC18F442-I/PT Datasheet - Page 90

• Manufacturer Part Number: PIC18F442-I/PT
• Description: Microcontroller; 16 KB Flash; 768 RAM; 256 EEPROM; 36 I/O; 40-Pin-TQFP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F442-I/PT

• A/d Inputs: 8-Channel, 10-Bit
• Comparators: 2
• 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

PIC18FXX2
FIGURE 9-2:
DS39564C-page 88
WR LATA
or
PORTA
WR TRISA
Note 1:
Data
Bus
RD PORTA
TMR0 Clock Input
I/O pin has protection diode to V
TRIS Latch
Data Latch
D
D
CK
CK
RD LATA
RD TRISA
Q
Q
Q
Q
BLOCK DIAGRAM OF
RA4/T0CKI PIN
Q
EN
EN
Schmitt
Trigger
Input
Buffer
D
SS
V
N
only.
SS
I/O pin
(1)
FIGURE 9-3:
ECRA6 or
RCRA6
Enable
WR LATA
or
PORTA
Note 1:
WR
TRISA
RD PORTA
Data
Bus
ECRA6 or
RCRA6 Enable
I/O pins have protection diodes to V
RD TRISA
TRIS Latch
Data Latch
D
D
CK
CK
RD LATA
Q
Q
Q
Q
BLOCK DIAGRAM OF
RA6 PIN
© 2006 Microchip Technology Inc.
Q
DD
EN
D
and V
V
V
P
N
SS
DD
SS
I/O pin
TTL
Input
Buffer
.
(1)