PIC18F6722-E/PT Microchip Technology, PIC18F6722-E/PT Datasheet - Page 28

• Manufacturer Part Number: PIC18F6722-E/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F6722-E/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3936 B
• Interface Type: SPI, I2C, EUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 5
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM183032, DM183022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA180020 - MODULE PLUG-IN HPC EXPL 18F87J11
• Lead Free Status / Rohs Status: Details

PIC18F872X FAMILY
FIGURE 4-4:
4.5
A data EEPROM address may be read via a sequence
of core instructions (4-bit command, ‘0000’) and then
output on PGD via the 4-bit command, ‘0010’ (TABLAT
register). The result may then be immediately com-
pared to the appropriate data in the programmer’s
memory for verification. Refer to Section 4.4 “Read
Data EEPROM Memory” for implementation details of
reading data EEPROM.
4.6
The term, “Blank Check”, means to verify that the device
has no programmed memory cells. All memories must
be verified: code memory, data EEPROM, ID locations
and Configuration bits. The Device ID registers
(3FFFFEh:3FFFFFh) should be ignored.
A “blank” or “erased” memory cell will read as a ‘1’. So,
Blank Checking a device merely means to verify that all
bytes read as FFh except the Configuration bits. Unused
(reserved) Configuration bits will read ‘0’ (programmed).
Refer to Table 5-1 for blank configuration expect data for
the various PIC18F872X family devices.
Given that Blank Checking is merely code and data
EEPROM verification with FFh expect data, refer to
Section 4.4 “Read Data EEPROM Memory” and
Section 4.2 “Verify Code Memory and ID Locations”
for implementation details.
DS39643C-page 28
PGC
PGD
Verify Data EEPROM
Blank Check
1
0
2
1
3
0
SHIFT OUT DATA HOLDING REGISTER TIMING (0010)
4
0
P5
PGD = Input
1
2
3
4
5
6
7
8
P6
9
LSb
FIGURE 4-5:
P14
10 11
1
2
PGD = Output
Shift Data Out
12
Blank Check Device
3
13
4
blank?
device
Abort
Start
14
Is
5
No
15 16
6
BLANK CHECK FLOW
© 2009 Microchip Technology Inc.
MSb
P5A
Fetch Next 4-Bit Command
Yes
1
n
PGD = Input
2
n
Continue
3
n
4
n