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参数资料
| 型号： | RFPIC12F675K-E/SS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO20 |
| 封装： | 0.209 INCH, PLASTIC, MO-150, SSOP-20 |
| 文件页数： | 95/123页 |
| 文件大小： | 5438K |
| 代理商： | RFPIC12F675K-E/SS |
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2003 Microchip Technology Inc.
Preliminary
DS70091A-page 71
rfPIC12F675
FIGURE 10-14:
TYPICAL IN-CIRCUIT
SERIAL PROGRAMMING
CONNECTION
10.10 In-Circuit Serial Programming
The rfPIC12F675 microcontrollers can be serially
programmed while in the end application circuit. This is
done with two lines for clock and data, and three lines
for power, ground, and programming voltage.
This allows customers to manufacture boards with
unprogrammed
devices,
and
then
program
the
microcontroller before shipping the product. This also
allows the most recent firmware or custom firmware to
be programmed.
The device is placed into a Program/Verify mode by
holding the GP0 and GP1 pins low, while raising the
MCLR (V
PP) pin from VIL to VIHH (see Programming
Specification). GP0 becomes the programming data
and GP1 becomes the programming clock. Both GP0
and GP1 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 on
whether the command was a load or a read. For
complete details of serial programming, please refer to
the Programming Specifications document.
A typical In-Circuit Serial Programming connection is
shown in Figure 10-14. The programming connections
are isolated from conflicting outputs and capacitive
loads by the 3 resistors. The V
DD connection on MCLR
may not be required if the pin is configured as GP3. Do
not place sensitive circuitry on the GP3/MCLR pin
without protection since the V
PP signal goes well above
V
DD during programming.
FIGURE 10-15:
PARALLEL DIP SOCKET
FOR EMULATION
10.11 In-Circuit Debugging
Since in-circuit debugging requires the loss of clock,
data and MCLR pins, MPLAB ICD 2 development with
an 8-pin microcontroller is not practical. Since the
MPLAB ICE 2000 emulation module leads would be
too long for the RF signals the following debug/emula-
tion strategy is recommended.
Build a prototype board with all your digital, analog, and
RF circuitry. Add an 8 pin DIP socket for the PIC12F675
debugging. Connect the socket as shown in Figure 10-
15. When soldering the rfPIC12F675 down bend up
pins 1-4 and 17-20 so that they do not contact the
board. A PIC12F675 or emulation/debugging develop-
ment tool can be plugged into the socket as in
This test method encourages RF development to start
early, as soon as the firmware can toggle the RF enable
and data lines. The socket can even be left in the final
layout for in-circuit production programming. A simple
method
for
programming
is
to
solder
all
the
rfPIC12F675 pins to the board and move the 8-pin DIP
socket to the back side of the board. Then use the 8-pin
standoff from the MPLAB ICE 2000 emulator to
connect the PCB to a programmer such as the Pro
There is an ICD 2 header inteface board for the
PIC12F675, part number AC162050. This special ICD
module is mounted on the top of a header and its
External
Connector
Signals
To Normal
Connections
To Normal
Connections
rfPIC12F675
V
DD
V
SS
GP3/MCLR/V
PP
GP1
GP0
+5V
0V
V
PP
CLK
Data I/O
V
DD
1
2
3
4
8
7
6
5
V
SS
GP0
GP1
GP2
V
DD
GP5
GP4
GP3
PIC12F675
rf
PIC12F675
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RFPIC12F675K-I/SS | 功能描述:射频微控制器 - MCU 290-350MHz UHF ASK/FSK Transmitter RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:Si100x 数据总线宽度:8 bit 最大时钟频率:24 MHz 程序存储器大小:64 KB 数据 RAM 大小:4 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LGA-42 安装风格:SMD/SMT 封装:Tube |
| RFPIC12F675KT-I/SS | 功能描述:射频微控制器 - MCU 1 KB Flash FSK ASK RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:Si100x 数据总线宽度:8 bit 最大时钟频率:24 MHz 程序存储器大小:64 KB 数据 RAM 大小:4 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LGA-42 安装风格:SMD/SMT 封装:Tube |
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