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W78958B Datasheet, PDF (2/28 Pages) Winbond – 8-BIT EMULATION MICROCONTROLLER | |||
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W78958B
FEATURES
⢠8-bit CMOS emulation microcontroller
⢠Real-time emulation at up to 40 MHz
⢠Convenient emulation chip for ICE market
⢠Two types: standard type and advanced type
⢠Standard type supports emulation for the W78C31, W78C32, W78C51, W78C52, W78C154*, and
W78C58
⢠Advanced type supports emulation for the W78C438, and W78C458
⢠In emulation mode, allows direct access to SFRs/PC and internal RAM
⢠Allows ICE makers to access external program/data memory easily
⢠Supports switching signals between "internal" and external ROM
⢠Supports combined emulation program and data memory in a 128 KB SRAM
⢠Provides internal S1 state clock timing signal for easy creation of the emulation control signals
⢠Fully static design
⢠256-byte on-chip scratchpad RAM
⢠64 KB program memory address space in standard type; 1 MB extended program memory address
space in advanced type
⢠64 KB data memory address space in standard type; 1 MB extended data memory address space in
advanced type
⢠Boolean processor
⢠Six-source, two-level interrupt capability in standard type; eight-source, two-level interrupt capability
in advanced type
⢠Three 16-bit timer/counters
⢠One full duplex serial channel
⢠Built-in power management
⢠Four 8-bit bidirectional and bit-addressable I/O ports in standard type; four 8-bit bidirectional and
bit- addressable I/O ports and one 8-bit bidirectional but parallel I/O port in advanced type
⢠Packaged in 100-pin PQFP
â W78958BF-40
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