参数资料
型号: W78E858A40FL
厂商: Nuvoton Technology Corporation of America
文件页数: 14/35页
文件大小: 0K
描述: IC MCU 8-BIT 32K FLASH 44-PQFP
标准包装: 96
系列: W78
核心处理器: 8052
芯体尺寸: 8-位
速度: 40MHz
连通性: EBI/EMI,串行端口
外围设备: POR,PWM,WDT
输入/输出数: 36
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 768 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: 0°C ~ 70°C
封装/外壳: 44-BQFP
包装: 托盘
W78E858
5.17 F04KBOOT Mode (Boot From 4K Bytes LDROM)
The W78E858 boots from APROM program (32K bytes bank) by default after chip reset. On some
occasions, user can force the W78E858 to boot from the LDROM program (4K bank) after chip reset.
The setting for this special mode is as follow.
5.17.1 F04KBOOT Mode
RST
P4.3
P2.7
P2.6
MODE
H
X
L
FO4KBOOT
H
L
X
FO4KBOOT
Note: In application system design, user must take care the P2, P3, ALE,
EA and PSEN pin status at reset to avoid
W78E858 entering the programming mode or F04KBOOT mode in normal operation.
Enter 4K Reboot M ode Tim ing
Ts=1us
Th > 24 clocks
P2.6
P2.7
X
RESET
5.18 Security
During the on-chip FLASH EPROM programming mode, the FLASH EPROM can be programmed and
verified repeatedly. Until the code inside the FLASH EPROM is confirmed OK, the code can be
protected. The protection of FLASH EPROM and those operations on it are described below:
The W78E858 has several special setting registers in FLASH EPROM block. Those bits of the security
register can’t be changed once they have been programmed from high to low. They can only be reset
through erase-all operation. The security register is located at the FFFFH on the same bank with 4K
LDROM i.e., P3.6 must set high at writer mode.
Publication Release Date: April 22, 2008
- 21 -
Revision A8
相关PDF资料
PDF描述
W83303AG IC ACPI CONTROLLER 48-LQFP
W83627UHG IC I/O CONTROLLER 128-QFP
W83L951DG IC EMBEDDED CNTRLR 128-LQFP
X90100M8IZT1 IC DIGITAL CAPACITOR NV 8-MSOP
X9015WS8T1 IC XDCP SGL 32-TAP 10K 8-SOIC
相关代理商/技术参数
参数描述
W78E858A40PL 功能描述:IC MCU 8-BIT 32K FLASH 44-PLCC RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:W78 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI,I²C,UART/USART 外围设备:POR,PWM,WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 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:68-LCC(J 形引线) 包装:带卷 (TR)
W78ERD2 制造商:WINBOND 制造商全称:Winbond 功能描述:8-BIT MICROCONTROLLER
W78ERD2_07 制造商:WINBOND 制造商全称:Winbond 功能描述:8-BIT MICROCONTROLLER
W78ERD2A 制造商:WINBOND 制造商全称:Winbond 功能描述:8-BIT MICROCONTROLLER
W78ERD2A40DL 功能描述:IC MCU 8-BIT 64K FLASH 40-DIP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:W78 标准包装:300 系列:78K0R/Ix3 核心处理器:78K/0R 芯体尺寸:16-位 速度:40MHz 连通性:3 线 SIO,I²C,LIN,UART/USART 外围设备:DMA,LVD,POR,PWM,WDT 输入/输出数:27 程序存储器容量:16KB(16K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 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:38-SSOP 包装:托盘