PIC16CE625-04I/SO Microchip Technology, PIC16CE625-04I/SO Datasheet - Page 64

• Manufacturer Part Number: PIC16CE625-04I/SO
• Description: IC MCU OTP 2KX14 EE COMP 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16CE625-04I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 13
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (7.5mm Width)
• For Use With: XLT18SO-1 - SOCKET TRANSITION 18SOIC 300MIL309-1075 - ADAPTER 18-SOIC TO 18-SOICAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Connectivity: -

PIC16CE62X
10.9
If
programmed, the on-chip program memory can be
read out for verification purposes.
10.10
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
readable and writable during program/verify. Only the
least significant 4 bits of the ID locations are used.
DS40182C-page 64
Note:
the
Code Protection
ID Locations
code
Microchip does not recommend code
protecting windowed devices.
protection
bit(s)
have
not
been
10.11
The PIC16CE62X microcontrollers can be serially
programmed 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
firmware 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.
After reset, to place the device into programming/verify
mode, the program counter (PC) is at location 00h. A
6-bit command is then supplied to the device.
Depending on the command, 14-bits of program data
are then supplied to or from the device, depending if the
command was a load or a read. For complete details of
serial
PIC16C6X/7X/9XX Programming Specifications (Liter-
ature #DS30228).
A typical in-circuit serial programming connection is
shown in Figure 10-20.
FIGURE 10-20: TYPICAL IN-CIRCUIT SERIAL
External
Connector
Signals
Data I/O
CLK
+5V
V
0V
In-Circuit Serial Programming
programming,
PP
PP
) pin from V
PROGRAMMING
CONNECTION
To Normal
Connections
To Normal
Connections
IL
1999 Microchip Technology Inc.
please
to V
IHH
(see programming
V
V
MCLR/V
RB6
RB7
V
refer
DD
SS
DD
PIC16CE62X
PP
to
the