PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 117

• Manufacturer Part Number: PIC18F6621-I/PT
• Description: 64 PIN, 64 KB FLASH, 3840 RAM, 52 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F6621-I/PT

• A/d Inputs: 12-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 54
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 64-pin TQFP
• Programmable Memory: 64K Bytes
• Ram Size: 3.8K Bytes
• Speed: 40 MHz
• Timers: 2-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 10-11:
FIGURE 10-12:
 2005 Microchip Technology Inc.
Note 1: I/O pins have diode protection to V
RD LATE
RD TRISE
Peripheral Out Select
Peripheral Data Out
Data Bus
WR LATE
WR TRISE
Peripheral Enable
RD PORTE
Peripheral Data In
or WR PORTE
Note 1: I/O pins have protection diodes to V
System Bus
Control
PORTE BLOCK DIAGRAM IN I/O MODE
PORTE BLOCK DIAGRAM IN SYSTEM BUS MODE
TRIS Latch
Data Latch
D
D
CK
CK
RD PORTE
Data Bus
Instruction Read
RD LATE
WR LATE
WR TRISE
RD TRISE
Bus Enable
Data/TRIS Out
Drive Bus
Instruction Register
or PORTE
Q
Q
Q
Q
DD
PIC18F6525/6621/8525/8621
TRIS Latch
Data Latch
D
D
CK
CK
and V
Override
TRIS
0
1
Q
SS
Q
Q
.
DD
Q
and V
EN
EN
Data
Port
D
EN
D
SS
0
1
Schmitt
Trigger
.
V
N
P
V
DD
SS
I/O pin
RE0
RE1
RE2
RE3
RE4
RE5
RE6
RE7
Pin
(1)
I/O pin
Override
TRIS OVERRIDE
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
TTL
Input
Buffer
(1)
DS39612B-page 115
External Bus
External Bus
External Bus
External Bus
External Bus
External Bus
External Bus
External Bus
Peripheral