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参数资料
| 型号： | RFPIC12C509AF/JW |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, UVPROM, 4 MHz, RISC MICROCONTROLLER, CDIP18 |
| 封装： | 0.300 INCH, WINDOWED, MO-036, CERDIP-18 |
| 文件页数： | 8/104页 |
| 文件大小： | 1352K |
| 代理商： | RFPIC12C509AF/JW |
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2001 Microchip Technology Inc.
Preliminary
DS70031A-page 9
rfPIC12C509AG/509AF
3.0
ARCHITECTURAL OVERVIEW
The rfPIC12C509AG/509AF is a low-cost, high perfor-
mance, 8-bit, fully static, EPROM-based CMOS micro-
controller combined with a UHF ASK/FSK transmitter.
There are no internal electrical connections between
the PICmicro MCU and the transmitter.
Section 7 has a detailed description of UHF ASK/FSK
transmitter.
3.1
PICmicro Microcontroller Unit
The high performance of the rfPIC12C509AG/509AF
family can be attributed to a number of architectural
features commonly found in RISC microprocessors. To
begin with, the rfPIC12C509AG/509AF uses a Harvard
architecture in which program and data are accessed
on separate buses. This improves bandwidth over tra-
ditional von Neumann architecture where program and
data are fetched on the same bus. Separating program
and data memory further allows instructions to be sized
differently than the 8-bit wide data word. Instruction
opcodes are 12 bits wide making it possible to have all
single word instructions. A 12-bit wide program mem-
ory access bus fetches a 12-bit instruction in a single
cycle. A two-stage pipeline overlaps fetch and execu-
tion of instructions. Consequently, all instructions (33)
execute in a single cycle (1
s @ 4MHz) except for pro-
gram branches.
The table below lists program memory (EPROM) and
data memory (RAM) for each device.
The rfPIC12C509AG/509AF can directly or indirectly
address its register files and data memory. All special
function registers including the program counter are
mapped in the data memory. The rfPIC12C509AG/
509AF has a highly orthogonal (symmetrical) instruc-
tion set that makes it possible to carry out any opera-
tion on any register using any addressing mode. This
symmetrical nature and lack of special optimal situa-
tions make programming with the rfPIC12C509AG/
509AF simple yet efficient. In addition, the learning
curve is reduced significantly.
The rfPIC12C509AG/509AF contains an 8-bit ALU and
working register. The ALU is a general purpose arith-
metic unit. It performs arithmetic and Boolean functions
between data in the working register and any register
file.
The ALU is 8 bits wide and capable of addition, subtrac-
tion, shift and logical operations. Unless otherwise
mentioned, arithmetic operations are two's comple-
ment in nature. In two-operand instructions, typically
one operand is the W (working) register. The other
operand is either a file register or an immediate con-
stant. In single operand instructions, the operand is
either the W register or a file register.
The W register is an 8-bit working register used for ALU
operations. It is not an addressable register.
Depending on the instruction executed, the ALU may
affect the values of the Carry (C), Digit Carry (DC), and
Zero (Z) bits in the STATUS register. The C and DC bits
operate as a borrow and digit borrow out bit, respec-
tively, in subtraction. See the SUBWF and ADDWF
instructions for examples.
3.2
UHF ASK/FSK Transmitter
The Transmitter is a fully integrated UHF ASK/FSK
transmitter consisting of crystal oscillator, phase-
locked loop (PLL), open-collector differential-output
Power Amplifier (PA), and mode control logic. External
components consist of bypass capacitors, crystal, and
PLL loop filter. There are no internal electrical connec-
tions between the PICmicro MCU and the transmitter.
The rfPIC12C509AG is capable of Amplitude Shift Key-
ing (ASK) modulation by turning the PA on and off. The
rfPIC12C509AF is capable of ASK or Frequency Shift
Keying (FSK) modulation by employing an internal FSK
switch to pull the transmitter crystal via a second load
capacitor.
The PICmicro MCU oscillator is independent from the
transmitter crystal oscillator. The transmit frequency is
fixed and set by an external reference crystal. Trans-
mit frequencies in the range of 310 to 480 MHz can be
selected. Output drive is an open-collector differential
amplifier. The differential output is well suited for loop
antennas. Output power is adjustable from +2 dBm to
-12 dBm in six discrete steps.
The rfPIC12C509AG/509AF are radio frequency (RF)
emitting devices. Wireless RF devices are governed by
a country’s regulating agency. For example, in the
United States it is the Federal Communications Com-
mittee (FCC) and in Europe it is the European Confer-
ence
of
Postal
and
Telecommunications
Administrations (CEPT). It is the responsibility of the
designer to ensure that their end product conforms to
rules and regulations of the country of use and/or sale.
Device
Memory
EPROM
Program
RAM
Data
Transmitter
rfPIC12C509AG
1024 x 12
41
ASK
rfPIC12C509AF
1024 x 12
41
ASK/FSK
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RFPIC12C509AFT-I/SS | 功能描述:射频微控制器 - MCU 1KB EPRM RF ASK/FSK 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 |
| RFPIC12C509AG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:18/20-Pin 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter |
| RFPIC12C509AG/JW | 功能描述:射频微控制器 - MCU 1KB EPRM RF ASKB 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 |
| RFPIC12C509AG-I/SO | 功能描述:射频微控制器 - MCU 1KB EPRM RF 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 |
| RFPIC12C509AGT-I/SO | 功能描述:射频微控制器 - MCU 1KB EPRM RF 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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