參數(shù)資料
型號(hào)： COP8SDR9IMT7
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 微控制器/微處理器
英文描述： 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
中文描述： 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO48
封裝： TSSOP-48
文件頁(yè)數(shù)： 27/80頁(yè)
文件大?。?/td> 972K
代理商： COP8SDR9IMT7
11.0 In-System Programming
11.1 INTRODUCTION
This device provides the capability to program the program
memory while installed in an application board. This feature
is called In System Programming (ISP). It provides a means
of ISP by using the MICROWIRE/PLUS, or the user can
provide his own, customized ISP routine. The factory in-
stalled ISP uses the MICROWIRE/PLUS port. The user can
provide his own ISP routine that uses any of the capabilities
of the device, such as USART, parallel port, etc.
11.2 FUNCTIONAL DESCRIPTION
The organization of the ISP feature consists of the user flash
program memory, the factory boot ROM, and some registers
dedicated to performing the ISP function. See
Figure 13
for
a simplified block diagram. The factory installed ISP that
uses MICROWIRE/PLUS is located in the Boot ROM. The
size of the Boot ROM is 1K bytes and also contains code to
facilitate in system emulation capability. If a user chooses to
write his own ISP routine, it must be located in the flash
program memory.
As described in
10.5 OPTION REGISTER
, there is a bit,
FLEX, that controls whether the device exits RESET execut-
ing from the flash memory or the Boot ROM. The user must
program the FLEX bit as appropriate for the application. In
the erased state, the FLEX bit = 0 and the device will
power-up executing from Boot ROM. When FLEX = 0, this
assumes that either the MICROWIRE/PLUS ISP routine or
external programming is being used to program the device. If
using the MICROWIRE/PLUS ISP routine, the software in
the boot ROM will monitor the MICROWIRE/PLUS for com-
mands to program the flash memory. When programming
the flash program memory is complete, the FLEX bit will
have to be programmed to a 1 and the device will have to be
reset, either by pulling external Reset to ground or by a
MICROWIRE/PLUS ISP EXIT command, before execution
from flash program memory will occur.
If FLEX = 1, upon exiting Reset, the device will begin ex-
ecuting from location 0000 in the flash program memory. The
assumption, here, is that either the application is not using
ISP, is using MICROWIRE/PLUS ISP by jumping to it within
the application code, or is using a customized ISP routine. If
a customized ISP routine is being used, then it must be
programmed into the flash memory by means of the
MICROWIRE/PLUS ISP or external programming as de-
scribed in the preceding paragraph.
11.3 REGISTERS
There are six registers required to support ISP: Address
Register Hi byte (ISPADHI), Address Register Low byte
(ISPADLO), Read Data Register (ISPRD), Write Data Reg-
ister (ISPWR), Write Timing Register (PGMTIM), and the
Control Register (ISPCNTRL). The ISPCNTRL Register is
not available to the user.
11.3.1 ISP Address Registers
The address registers (ISPADHI & ISPADLO) are used to
specify the address of the byte of data being written or read.
For page erase operations, the address of the beginning of
the page should be loaded. For mass erase operations,
0000 must be placed into the address registers. When read-
ing the Option register, FFFF (hex) should be placed into the
address registers. Registers ISPADHI and ISPADLO are
cleared to 00 on Reset. These registers can be loaded from
either flash program memory or Boot ROM and must be
maintained for the entire duration of the operation.
Note: The actual memory address of the Option Register is
7FFF (hex), however the MICROWIRE/PLUS ISP routines
require the address FFFF (hex) to be used to read the
Option Register when the Flash Memory is secured.
TABLE 4. High Byte of ISP Address
ISPADHI
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Addr15
Addr14
Addr 13
Addr12
Addr11
Addr10
Addr9
Addr8
TABLE 5. Low Byte of ISP Address
ISPADLO
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Addr7
Addr6
Addr5
Addr4
Addr3
Addr2
Addr1
Addr0
10138917
FIGURE 13. Block Diagram of ISP
C
www.national.com
27
相關(guān)PDF資料
PDF描述
COP8SBR9IMT8 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
COP8SCR9IMT8 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
COP8SDR9IMTA8 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
COP8SCR9HLQ7 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
COP8SDR9HLQ7 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
COP8SDR9IMT8 功能描述:IC MCU EEPROM 8BIT 32K 48-TSSOP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:COP8™ 8S 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND
COP8SDR9IMTA8 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
COP8SDR9KMT8 功能描述:IC MCU EEPROM 8BIT 32K 56-TSSOP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:COP8™ 8S 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
COP8SDR9KMTA8 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
COP8SDR9LVA7 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*