UPD77110GC NEC [NEC], UPD77110GC Datasheet - Page 27

• Manufacturer Part Number: UPD77110GC
• Description: 16-BIT FIXED-POINT DIGITAL SIGNAL PROCESSORS
• Manufacturer: NEC [NEC]

6.2 STOP Mode
PLL, are stopped and the power consumption is minimized with only leakage current flowing.
retained, but it takes several 100 s to release the mode.
the WAKEUP pin when it is asserted active in the STOP mode. Whether the WAKEUP pin is used to release the
STOP mode is selected by mask option. For details, refer to 8.2 WAKEUP Function and 8.3.2 WAKEUP function.
7. MEMORY MAP
employed.
7.1 Instruction Memory
7.1.1 Instruction memory map
depending on the product.
To set this mode, execute the STOP instruction. In this mode, all the functions, including the clock circuit and
To release the STOP mode, use hardware reset or WAKEUP pin.
When releasing the STOP mode by using the WAKEUP pin, the contents of the internal registers and memory are
The WAKEUP pin is multiplexed with the INT4 pin. Usually, this pin functions as an interrupt pin, but functions as
A Harvard architecture, in which the instruction memory space and data memory space are separated is
The instruction memory space consists of 64K words
Caution Programs and data cannot be placed at addresses reserved for the system, nor can these
addresses be accessed. If these addresses are accessed, the normal operation of the device
cannot be guaranteed.
0xFFFF
0xC000
0xBFFF
0x4000
0x3FFF
0x1000
0x0FFF
0x0240
0x023F
0x0200
0x01FF
0x0100
0x00FF
0x0000
Vector area (64 words)
Internal instruction RAM
Internal instruction
RAM
Boot-up ROM
(32K words)
(256 words)
(3.5K words)
PD77110
System
System
System
Data Sheet U12801EJ4V0DS00
32 bits, and the capacity and type of the memory differ
0xBF00
0xBEFF
0x0600
0x05FF
Vector area (64 words)
Internal instruction RAM
Internal instruction
ROM
(31.75K words)
PD77111, 77112
Boot-up ROM
(256 words)
(1K words)
System
System
System
PD77110, 77111, 77112
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