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| 型号： | PIC16HV616-I/SL |
| 厂商： | Microchip Technology |
| 文件页数： | 17/44页 |
| 文件大小： | 0K |
| 描述： | IC PIC MCU FLASH 2KX14 14SOIC |
| 产品培训模块： | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 标准包装： | 57 |
| 系列： | PIC® 16F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 外围设备： | 欠压检测/复位，POR，WDT |
| 输入/输出数： | 11 |
| 程序存储器容量： | 3.5KB（2K x 14） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 128 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2 V ~ 5 V |
| 数据转换器： | A/D 8x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 639 (CN2011-ZH PDF) |
| 配用： | AC162083-ND - HEADER MPLAB ICD2 PIC16F616 8/14 XLT14SO-1-ND - SOCKET TRANSITION 14SOIC 150/208 |
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PIC16F610/616/16HV610/616
DS41288F-page 24
2009 Microchip Technology Inc.
2.3
PCL and PCLATH
The Program Counter (PC) is 13 bits wide. The low byte
comes from the PCL register, which is a readable and
writable register. The high byte (PC<12:8>) is not directly
readable or writable and comes from PCLATH. On any
Reset, the PC is cleared. Figure 2-5 shows the two
situations for the loading of the PC. The upper example
in Figure 2-5 shows how the PC is loaded on a write to
PCL (PCLATH<4:0>
→ PCH). The lower example in
Figure 2-5 shows how the PC is loaded during a CALL or
GOTO
instruction (PCLATH<4:3>
→ PCH).
FIGURE 2-5:
LOADING OF PC IN
DIFFERENT SITUATIONS
2.3.1
MODIFYING PCL
Executing any instruction with the PCL register as the
destination
simultaneously
causes
the
Program
Counter PC<12:8> bits (PCH) to be replaced by the
contents of the PCLATH register. This allows the entire
contents of the program counter to be changed by
writing the desired upper 5 bits to the PCLATH register.
When the lower 8 bits are written to the PCL register,
all 13 bits of the program counter will change to the
values contained in the PCLATH register and those
being written to the PCL register.
A computed GOTO is accomplished by adding an offset
to the program counter (ADDWF PCL). Care should be
exercised when jumping into a look-up table or
program branch table (computed GOTO) by modifying
the PCL register. Assuming that PCLATH is set to the
table start address, if the table length is greater than
255 instructions or if the lower 8 bits of the memory
address rolls over from 0xFF to 0x00 in the middle of
the table, then PCLATH must be incremented for each
address rollover that occurs between the table
beginning and the target location within the table.
For more information refer to Application Note AN556,
“Implementing a Table Read” (DS00556).
2.3.2
STACK
The PIC16F610/616/16HV610/616 Family has an
8-level x 13-bit wide hardware stack (see Figure 2-1).
The stack space is not part of either program or data
space and the Stack Pointer is not readable or writable.
The PC is PUSHed onto the stack when a CALL
instruction is executed or an interrupt causes a branch.
The stack is POPed in the event of a RETURN, RETLW
or a RETFIE instruction execution. PCLATH is not
affected by a PUSH or POP operation.
The stack operates as a circular buffer. This means that
after the stack has been PUSHed eight times, the ninth
push overwrites the value that was stored from the first
push. The tenth push overwrites the second push (and
so on).
2.4
Indirect Addressing, INDF and
FSR Registers
The INDF register is not a physical register. Addressing
the INDF register will cause indirect addressing.
Indirect addressing is possible by using the INDF
register. Any instruction using the INDF register
actually accesses data pointed to by the File Select
Register (FSR). Reading INDF itself indirectly will
produce 00h. Writing to the INDF register indirectly
results in a no operation (although Status bits may be
affected). An effective 9-bit address is obtained by
concatenating the 8-bit FSR and the IRP bit of the
STATUS register, as shown in Figure 2-7.
A simple program to clear RAM location 40h-4Fh using
indirect addressing is shown in Example 2-1.
EXAMPLE 2-1:
INDIRECT ADDRESSING
PC
12
8
7
0
5
PCLATH<4:0>
PCLATH
Instruction with
ALU Result
GOTO, CALL
OPCODE <10:0>
8
PC
12
11 10
0
11
PCLATH<4:3>
PCH
PCL
87
2
PCLATH
PCH
PCL
PCL as
Destination
Note 1: There are no Status bits to indicate stack
overflow or stack underflow conditions.
2: There are no instructions/mnemonics
called PUSH or POP. These are actions
that occur from the execution of the
CALL,
RETURN,
RETLW
and RETFIE
instructions
or
the
vectoring
to
an
interrupt address.
MOVLW
0x40
;initialize pointer
MOVWF
FSR
;to RAM
NEXT
CLRF
INDF
;clear INDF register
INCF
FSR, F
;inc pointer
BTFSS
FSR,4
;all done?
GOTO
NEXT
;no clear next
CONTINUE
;yes continue
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC16HV616T-E/ML | 制造商:Microchip Technology Inc 功能描述:PIC16 Series 128 B RAM 3.5 kB Flash 8-Bit CMOS Microcontroller - QFN-16 |
| PIC16HV616T-E/SL | 制造商:Microchip Technology Inc 功能描述:PIC16 Series 128 B RAM 3.5 kB Flash 8-Bit CMOS Microcontroller - SOIC-14 |
| PIC16HV616T-I/ML | 功能描述:8位微控制器 -MCU 4KB Flash 128 RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 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 + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC16HV616T-I/SL | 功能描述:8位微控制器 -MCU 4KB Flash 128 RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 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 + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC16HV616T-I/ST | 功能描述:8位微控制器 -MCU 4KB Flash 128 RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 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 + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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