PIC16C926-I/PT Microchip Technology, PIC16C926-I/PT Datasheet - Page 114

• Manufacturer Part Number: PIC16C926-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C926-I/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: OTP
• Ram Size: 336 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 336 B
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 1 x 16 bit
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA16PQ640 - ADAPTER DEVICE FOR MPLAB-ICEAC164023 - MODULE SKT PROMATEII 68TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC16C926I/PT

PIC16C925/926
FIGURE 12-14:
12.9
If the code protection bit(s) have not been pro-
grammed, the on-chip program memory can be read
out for verification purposes.
12.10 ID Locations
Four memory locations (2000h - 2003h) are designated
as ID locations, where the user can store checksum or
other code identification numbers. These locations are
not accessible during normal execution, but are read-
able and writable during program/verify. It is recom-
mended that only the four Least Significant bits of the
ID location are used.
12.11
PIC16CXXX microcontrollers can be serially pro-
grammed while in the end application circuit. This is
simply done with two lines for clock and data, and three
other lines for power, ground, and the programming
voltage. This allows customers to manufacture boards
with unprogrammed devices, and then program the
microcontroller just before shipping the product. This
also allows the most recent firmware or a custom firm-
ware to be programmed.
The device is placed into a Program/Verify mode by
holding the RB6 and RB7 pins low, while raising the
MCLR (V
specification). RB6 becomes the programming clock
and RB7 becomes the programming data. Both RB6
and RB7 are Schmitt Trigger inputs in this mode.
DS39544A-page 112
Note
OSC1
CLKOUT
INT pin
INTF Flag
(INTCON<1>)
GIE bit
(INTCON<7>)
INSTRUCTION FLOW
Instruction
Fetched
Instruction
Executed
Note:
1:
2:
3:
4:
(4)
Program Verification/Code
Protection
PP
PC
In-Circuit Serial Programming
Microchip does not recommend code pro-
tecting windowed devices.
XT, HS or LP oscillator mode assumed.
T
GIE = ’1’ assumed. In this case after wake-up, the processor jumps to the interrupt routine.
If GIE = ’0’, execution will continue in-line.
CLKOUT is not available in these osc modes, but shown here for timing reference.
) pin from V
OST
Inst(PC) = SLEEP
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1
= 1024T
Inst(PC - 1)
PC
OSC
WAKE-UP FROM SLEEP THROUGH INTERRUPT
IL
(drawing not to scale) This delay will not be there for RC osc mode.
to V
Inst(PC + 1)
SLEEP
PC+1
IHH
(see programming
Processor in
SLEEP
PC+2
Preliminary
T
OST
(2)
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Inst(PC + 2)
Inst(PC + 1)
After RESET, to place the device into Program/Verify
mode, the program counter (PC) is at location 00h. A
6-bit command is then supplied to the device. Depend-
ing on the command, 14-bits of program data are then
supplied to or from the device, depending if the com-
mand was a load or a read. For complete details of
serial programming, please refer to the PIC16C6X/7X
Programming Specifications (Literature #DS30228).
FIGURE 12-15:
PC+2
External
Connector
Signals
Data I/O
CLK
+5V
V
0V
PP
Interrupt Latency
Dummy cycle
(Note 2)
PC + 2
TYPICAL IN-CIRCUIT
SERIAL PROGRAMMING
CONNECTION
To Normal
Connections
To Normal
Connections
2001 Microchip Technology Inc.
Inst(0004h)
Dummy cycle
0004h
V
V
MCLR/V
RB6
RB7
DD
SS
PIC16CXXX
Inst(0005h)
Inst(0004h)
0005h
V
PP
DD