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參數(shù)資料
| 型號： | MC68HC705F4FB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 1.789 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 60/130頁 |
| 文件大?。?/td> | 10504K |
| 代理商： | MC68HC705F4FB |
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MC68HC05F4
3-5
MEMORY AND REGISTERS
3
ER1, ER0 — Erase select bits
ER1 and ER0 are used to select either single byte programming or one of three erase modes:
byte, block, or bulk. Table 3-2 shows the mode selected for each bit conguration. These bits are
readable and writable and are cleared by reset.
–
In byte erase mode, only the selected byte is erased.
–
In block erase mode, a 64-byte block of EEPROM is erased. The EEPROM
memory space is divided into four 64-byte blocks ($0200 – $023F, $0240 –
$027F, $0280 – $02BF and $02C0 – $02FF) and performing a block erase
on any address within a block will erase the entire block.
–
In bulk erase mode, the entire 256 bytes of EEPROM are erased.
LATCH — EEPROM latch bit
1 (set)
–
EEPROM address and data buses are congured for programming.
0 (clear) –
EEPROM address and data buses are congured for normal
operation.
When set, the LATCH bit congures the EEPROM address and data buses for programming. In
addition, writes to the EEPROM array cause the address and data buses to be latched. This bit is
readable and writable, but reads from the EEPROM array are inhibited if the LATCH bit is set and
a write to the EEPROM space has taken place. When this bit is clear, address and data buses are
congured for normal operation. Reset clears this bit.
EERC — EEPROM RC oscillator control
1 (set)
–
Use internal RC oscillator for EEPROM.
0 (clear) –
Use CPU clock for EEPROM.
When this bit is set, the EEPROM memory array uses the internal RC oscillator instead of the CPU
clock. After setting the EERC bit, the user should wait a time tRCON to allow the RC oscillator to
stabilize. This bit is readable and writable and should be set by the user when the internal bus
frequency falls below 1.5MHz. Reset clears this bit.
Table 3-2 Erase modes
ER1
ER0
Mode
0
Program
0
1
Byte erase
1
0
Block erase
1
Bulk erase
TPG
31
05F4Book Page 5 Tuesday, August 5, 1997 1:10 pm
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC705G1B | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HC705J1A | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705J1ACDW | 功能描述:IC MCU 4MHZ 1.2K OTP 20-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 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 程序存儲器容量:64KB（64K x 8） 程序存儲器類型: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 |
| MC68HC705J1ACP | 功能描述:IC MCU 4MHZ 1.2K OTP 20-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 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 程序存儲器容量:64KB（64K x 8） 程序存儲器類型: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 |
| MC68HC705J1ACPE | 功能描述:8位微控制器 -MCU HCO5 CORE+1.2K RAM + EPR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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