PIC18LF8723T-I/PT Microchip Technology, PIC18LF8723T-I/PT Datasheet - Page 28
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PIC18LF8723T-I/PT
Manufacturer Part Number
PIC18LF8723T-I/PT
Description
PIC18 With 128KB Flash, 4KB RAM, 1024 DataEE, 12-bit ADC 80 TQFP 12x12x1mm T/R
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18F8627T-IPT.pdf
(44 pages)
2.PIC18F6628-IPT.pdf
(60 pages)
3.PIC18F6628-IPT.pdf
(6 pages)
Specifications of PIC18LF8723T-I/PT
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
70
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)
2 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TFQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PIC18LF8723T-I/PTTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF8723T-I/PT
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Part Number:
PIC18LF8723T-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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