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W78958BF-40 PDF预览

W78958BF-40

更新时间： 2024-02-24 13:28:42
品牌 Logo 应用领域
华邦 - WINBOND 时钟微控制器外围集成电路
页数 文件大小 规格书
28页 264K
描述
Microcontroller, 8-Bit, MROM, CMOS, PQFP100, PLASTIC, QFP-100

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W78958BF-40 技术参数

生命周期：Obsolete零件包装代码：QFP
包装说明：QFP,针数：100
Reach Compliance Code：unknownECCN代码：3A991.A.2
HTS代码：8542.31.00.01风险等级：5.84
具有ADC：NO地址总线宽度：20
位大小：8最大时钟频率：40 MHz
DAC 通道：NODMA 通道：NO
外部数据总线宽度：8JESD-30 代码：R-PQFP-G100
长度：20 mmI/O 线路数量：40
端子数量：100最高工作温度：70 °C
最低工作温度：PWM 通道：NO
封装主体材料：PLASTIC/EPOXY封装代码：QFP
封装形状：RECTANGULAR封装形式：FLATPACK
认证状态：Not QualifiedROM可编程性：MROM
座面最大高度：3.3 mm最大供电电压：5.5 V
最小供电电压：4.5 V标称供电电压：5 V
表面贴装：YES技术：CMOS
温度等级：COMMERCIAL端子形式：GULL WING
端子节距：0.65 mm端子位置：QUAD
宽度：14 mmuPs/uCs/外围集成电路类型：MICROCONTROLLER
Base Number Matches：1

W78958BF-40 数据手册

 浏览型号W78958BF-40的Datasheet PDF文件第2页浏览型号W78958BF-40的Datasheet PDF文件第3页浏览型号W78958BF-40的Datasheet PDF文件第4页浏览型号W78958BF-40的Datasheet PDF文件第5页浏览型号W78958BF-40的Datasheet PDF文件第6页浏览型号W78958BF-40的Datasheet PDF文件第7页 
W78958B  
8-BIT EMULATION MICROCONTROLLER  
GENERAL DESCRIPTION  
The W78958B is an 8-bit emulation microcontroller that supports emulation for the Winbond W78C51  
family of products, including the W78C31, W78C32, W78C51, W78C52, W78C154*, W78C58,  
W78C438, and W78C458. It is designed to support real-time (up to 40 MHz) emulation tools, such as  
in-circuit emulators (ICEs).  
The W78958B is packaged in a 100-pin PQFP and is available in two different types, standard and  
advanced. The standard type supports the functions of the W78C31, W78C32, W78C51, W78C52,  
W78C154*, and W78C58. The advanced type supports the functions of the W78C438 and W78C458.  
Both types can be operated in two modes, normal and emulation. In normal mode, the W78958B runs  
freely, like the W78C51 family of products. In emulation mode, which is entered by driving the  
ICESET pin high asynchronously, the W78958B stays in the S2 state of the next instruction. In this  
mode, the W78958B allows direct access (read/write) to the special function registers (SFRs), the  
program counter (PC), and the internal RAM. Also, it allows ICE makers to access the external  
program and data memory easily, thereby eliminating the need for glue logic. Moreover, it provides  
several signals to facilitate ICE design, including IPME (Internal Program Memory Enable), for  
switching between "internal" and external ROM, ESEL (Emulation address space Select), for  
combining the emulation program and data memory in a 128 KB SRAM, and CLKS1 (internal S1  
state clock timing signal), for creating the emulation control signals. Once the ICESET pin goes low,  
the W78958B will release its internal clock and return to its normal operating mode.  
For detailed specifications concerning the W78C31, W78C32, W78C51, W78C52, W78C154*,  
W78C58, W78C438, and W78C458, refer to the Functional Description below or to the Winbond  
product specifications.  
Notes for all W78C154*:  
1. W78958B will emulate W78C154 except port1.6 & port1.7 as output mode:  
W78958B port1.6 & port1.7  
W78C154 port1.6 & port1.7  
pull-ups  
open drain  
2. The specification of W78C154 is exclusive, therefore, the DC characteristics is not fully compatible with W78958B, however  
the emulation function is still the same as W78958B.  
Publication Release Date: September  
1997  
- 1 -  
Revision A3  
1234567...28

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