收藏本站
参数资料
型号： PIC16LF72T-I/ML
厂商： Microchip Technology
文件页数： 51/136页
文件大小： 0K
描述： IC MCU FLASH 2KX14 LV AD 28-QFN
产品培训模块： Asynchronous Stimulus
标准包装： 1,600
系列： PIC® 16F
核心处理器： PIC
芯体尺寸： 8-位
速度： 20MHz
连通性： I²C，SPI
外围设备： 欠压检测/复位，POR，PWM，WDT
输入/输出数： 22
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 ~ 5.5 V
数据转换器： A/D 5x8b
振荡器型： 外部
工作温度： -40°C ~ 85°C
封装/外壳： 28-VQFN 裸露焊盘
包装： 带卷 (TR)
2007 Microchip Technology Inc.
DS39597C-page 19
PIC16F72
2.3.1
COMPUTED GOTO
A computed GOTO is accomplished by adding an offset
to the program counter (ADDWF PCL). When doing a
table read using a computed GOTO method, care
should be exercised if the table location crosses a PCL
memory boundary (each 256-byte block). Refer to the
Application
Note,
“Implementing
a
Table
Read"
(AN556).
2.3.2
STACK
The stack allows a combination of up to eight program
calls and interrupts to occur. The stack contains the
return address from this branch in program execution.
Mid-range devices have an 8-level deep x 13-bit wide
hardware stack. The stack space is not part of either
program or data space and the stack pointer is not
readable or writable. The PC is PUSH’d onto the stack
when a CALL instruction is executed, or an interrupt
causes a branch. The stack is POP’d in the event of a
RETURN,
RETLW
or a RETFIE instruction execution.
PCLATH is not modified when the stack is PUSH’d or
POP’d.
After the stack has been PUSH’d 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). An example of the overwriting of the stack is
shown in Figure 2-4.
FIGURE 2-4:
STACK MODIFICATION
2.4
Program Memory Paging
The CALL and GOTO instructions provide 11 bits of
address to allow branching within any 2K program
memory page. When doing a CALL or GOTO instruction,
the upper two bits of the address are provided by
PCLATH<4:3>. When doing a CALL or GOTO instruc-
tion, the user must ensure that the page select bits are
programmed so that the desired program memory
page is addressed. If a return from a CALL instruction
(or interrupt) is executed, the entire 13-bit PC is pushed
onto the stack.
Therefore,
manipulation
of
the
PCLATH<4:3> bits is not required for the return
instructions (which POPs the address from the stack).
2.5
Indirect Addressing, INDF and
FSR Registers
The INDF register is not a physical register. Address-
ing INDF actually addresses the register whose
address is contained in the FSR register (FSR is a
pointer). This is indirect addressing.
A simple program to clear RAM locations 20h-2Fh
using indirect addressing is shown in Example 2-1.
EXAMPLE 2-1:
INDIRECT ADDRESSING
An effective 9-bit address is obtained by concatenating
the 8-bit FSR register and the IRP bit (STATUS<7>), as
shown in Figure 2-5.
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.
Push1 Push9
Push2 Push10
Push3
Push4
Push5
Push6
Push7
Push8
Top-of-Stack
Stack
Note:
The PIC16F72 device ignores the paging
bit
PCLATH<4:3>.
The
use
of
PCLATH<4:3> as a general purpose read/
write bit is not recommended, since this
may affect upward compatibility with future
products.
movlw
0x20
;initialize pointer
movwf
FSR
;to RAM
NEXT
clrf
INDF
;clear INDF register
incf
FSR
;inc pointer
btfss
FSR,4 ;all done?
goto
NEXT
;NO, clear next
CONTINUE
:
;YES, continue
相关PDF资料
PDF描述
VI-JTH-IX-S CONVERTER MOD DC/DC 52V 75W
VE-203-IY-B1 CONVERTER MOD DC/DC 24V 50W
VI-JT3-IX-S CONVERTER MOD DC/DC 24V 75W
PIC16LF72-I/SS IC PIC MCU FLASH 2KX14 28SSOP
VI-J74-IX-S CONVERTER MOD DC/DC 48V 75W
相关代理商/技术参数
参数描述
PIC16LF737-I/ML 功能描述:8位微控制器 -MCU 7KB 368 RAM 25 I/O 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
PIC16LF737-I/SO 功能描述:8位微控制器 -MCU 7KB 368 RAM 25 I/O 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
PIC16LF737-I/SP 功能描述:8位微控制器 -MCU 7KB 368 RAM 25 I/O 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
PIC16LF737-I/SS 功能描述:8位微控制器 -MCU 7KB 368 RAM 25 I/O 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
PIC16LF737T-I/ML 功能描述:8位微控制器 -MCU 7KB 368 RAM 25 I/O 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
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*