UPD77016 NEC, UPD77016 Datasheet - Page 13

• Manufacturer Part Number: UPD77016
• Description: 16 bits/ Fixed-point Digital Signal Processor
• Manufacturer: NEC

Note 1. IA15 to IA0 pins are located on these pins: 101 to 104, 107 to 114, 117 to 120
Remark
IA15 - IA0
ID31 - ID0
PWR
TDO
TICE
TCK
TDI
TMS
• External instructions memory interface
• Debugging interface
2. ID31 to ID0 pins are located on these pins: 121 to 128, 132 to 139, 142 to 149, 152 to 159
Symbol
Symbol
The state of the pins added 3S becomes high impedance when RESET is input.
Note 1.
Note 2.
129
96
97
98
99
100
Pin No.
Pin No.
I/O (3S)
O (3S)
O (3S)
I/O
I/O
O
O
I
I
I
Address bus to external instruction memory
• Even the internal instruction memory is accessed, the
32 bits instruction input
Program memory write strobe
• Write strobe for external instruction memory. This pin
For debugging
For debugging
For debugging
For debugging
For debugging
address is output to the external instruction memory.
In this case, the PD77016 ignores data of external
instruction memory output.
loads program to external instruction memory (not
internal memory) while PD77016 is in boot operation.
Function
Function
PD77016
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