參數(shù)資料
型號: MC68HC705V8B
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封裝: SDIP-56
文件頁數(shù): 106/172頁
文件大小: 890K
代理商: MC68HC705V8B
MOTOROLA
SECTION 3: EPROM AND EEPROM
Page 28
MC68HC705V8 Specification Rev. 2.1
Table 3-2:
Erase Mode Select
3.4.3
LATCH
When set, LATCH configures the EEPROM address and data bus for programming. When
LATCH is set, writes to the EEPROM array cause the data bus and the address bus to be
latched. This bit is readable and writable, but reads from the array are inhibited if the
LATCH bit is set and a write to the EEPROM space has taken place. When clear, address
and data buses are configured for normal operation. Reset clears this bit.
3.4.4
EERC - EEPROM RC Oscillator Control
When this bit is set, the EEPROM section uses the internal RC oscillator instead of the CPU
clock. After setting the EERC bit, delay a time t
RCON 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 1.5 MHz. Reset clears this bit.
3.4.5
EEPGM - EEPROM Programming Power Enable
EEPGM must be written to enable (or disable) the EEPGM function. When set, EEPGM
turns on the charge pump and enables the programming (or erasing) power to the
EEPROM array. When clear, this power is switched off. This will enable pulsing of the
programming voltage to be controlled internally. This bit can be read at any time, but can
only be written to if LATCH=1. If LATCH is not set, then EEPGM cannot be set. Reset clears
this bit.
3.4.6
PROGRAMMING/ERASING PROCEDURES
To program a byte of EEPROM, set LATCH = CPEN = 1, set ER1 = ER0 = 0, write data to
the desired address and then set EEPGM for a time t
EEPGM.
In general, all bits should be erased before being programmed. However, if write/erase
cycling is a concern, a procedure can be followed to minimize the cycling of each bit in each
EEPROM byte. The erased state is 1; therefore, if any bits within the byte need to be
changed from a 0 to a 1, the byte must be erased before programming. The decision
whether to erase a byte before programming is summarized in Table 3-3.
1
ER1
0
1
Bulk Erase
ER0
MODE
0
No Erase
1
Byte Erase
0
Block Erase
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料
PDF描述
MC68HC705V8FN 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC68
MC68HC705V8CFN 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC68
MC68HC705X4CDW 8-BIT, OTPROM, 2.2 MHz, MICROCONTROLLER, PDSO28
MC68HC05X4CDW 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
MC68HC705X4DW 8-BIT, OTPROM, 2.2 MHz, MICROCONTROLLER, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC706P6ACDW 制造商:Motorola Inc 功能描述:
MC68HC708MP16CFU 制造商:MAJOR 功能描述:
MC68HC711D3CFBE2 制造商:Freescale Semiconductor 功能描述:
MC68HC711D3CFN2 功能描述:IC MCU 2MHZ 4K OTP 44-PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC11 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標準包裝: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
MC68HC711D3CFNE2 功能描述:8位微控制器 -MCU 8B OTP 192RAM 2 MHZ 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