PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 342

• 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

PIC18F6525/6621/8525/8621
FIGURE 27-8:
TABLE 27-10: PROGRAM MEMORY WRITE TIMING REQUIREMENTS
DS39612B-page 340
150
151
153
154
156
157
157A
166
171
171A
Param.
Operating Conditions: 2.0V < V
AD<15:0>
No
A<19:16>
UB or LB
WRH or
OSC1
WRL
BA0
ALE
CE
TadV2alL
TalL2adl
TwrH2adl
TwrL
TadV2wrH
TbsV2wrL
TwrH2bsI
TalH2alH
TalH2csL
TubL2oeH
Symbol
171A
Q1
PROGRAM MEMORY WRITE TIMING DIAGRAM
Address Out Valid to ALE ↓ (address setup time)
ALE ↓ to Address Out Invalid (address hold time)
WRn ↑ to Data Out Invalid (data hold time)
WRn Pulse Width
Data Valid before WRn ↑ (data setup time)
Byte Select Valid before WRn ↓ (byte select
setup time)
WRn ↑ to Byte Select Invalid (byte select hold time) 0.125 T
ALE ↑ to ALE ↑ (cycle time)
Chip Enable Active to ALE ↓
AD Valid to Chip Enable Active
CC
Address
< 5.5V, -40°C < T
150
151
171
Q2
Characteristics
157
A
< +125°C unless otherwise stated.
Address
Q3
166
154
Data
156
Q4
153
0.25 T
0.25 T
0.5 T
0.5 T
0.25 T
Min
CY
—
—
CY
CY
CY
5
5
CY
– 10
CY
– 10
– 5
– 20
– 5
 2005 Microchip Technology Inc.
157A
Q1
0.5 T
Typ
T
—
—
—
—
—
—
—
—
CY
CY
Address
Address
Max
—
—
—
—
—
—
—
—
10
—
Q2
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns