W78958B Datasheet, PDF (26/28 Pages) Winbond – 8-BIT EMULATION MICROCONTROLLER

Advanced Type Application in Emulation Mode
W78958B
VCC
ICE_BREAKPOINT
_LOGIC
EA
ENSTD
ICESET
EMU
INT2
INT3
P8<7:0>
P0<7:0>
P1<7:0>
P2<7:0>
P3<7:0>
DP4<7:0>
AP5<7:0>
AP6<7:0>
AP7<3:0>
<7:0>
<15:8>
<19:16>
PSEN
ESEL
<7> (RD)
<6> (WR)
ICE_CONTROL_LOGIC
ROM_RD
RAM_RD
RAM_WR
EMU_ADDR<19:18>
EMU_ADDR<15:0>
EMU_DB<7:0>
INT_WR
EMU_ADDR<16>
INT_RD
EMU_ADDR<17>
SEL1
0
1
0
1
1MB
ROM
OE
64KB
RAM
OE WR
ESEL
SEL1 SEL0
access space
ESEL AP6<0>
0
0
SFR/PC 80 - FF
0
0
0
1
Internal RAM 0 - FF
0
1
1
0
ROM
0 - FFFFF
1
-
1
1
RAM
0 - FFFF
1
-
Note: When ESEL=1, ALE and PSEN are high-impedence.
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