UPD70433GD-16-5BB NEC [NEC], UPD70433GD-16-5BB Datasheet - Page 22

• Manufacturer Part Number: UPD70433GD-16-5BB
• Description: V55PITM 16-BIT MICROPROCESSOR
• Manufacturer: NEC [NEC]

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These registers are mapped onto the register file space (in on-chip RAM). The address is the value obtained by adding the
offset for each register to (register bank number
3.2.6
operation can be set using the individual bits in the registers. These registers are mapped onto the memory space, and
are read and written to using the same method as for ordinary memory (see 3.5.3 "Special Function Register Area").
BTCLRL is an instruction newly provided in the V25 or V35.
area, and the BTCLRL instruction is valid for registers in the lower 256 bytes (0FFE00H to 0FFEFFH).
When a reset is performed, DS2 and DS3 of register bank 15 are initialized to 0000H.
Extended Segment Register 8-Bit Fixed
The V55PI has a group of registers with the function of controlling on-chip peripheral hardware.
A number of registers are provided according to the type of cotrol for each peripheral hardware unit, and the actual
There are also two instructions, BTCLR and BTCLRL, which are only valid for special function registers. Of these,
The BTCLR instruction is valid for registers in the upper 240 bytes (0FFF00H to 0FFFEFH) of the special function register
Special Function Registers (SFR)
Example
+
x
0
x
x
0
x
MOV
MOV
MOV
x
x
x
x
x
x
AW, 0FFE0H
DS1, AW
BL, DS1 : BYTE PTR [1EFH]; 0FFE0H : 1EFH (PRC register) Read
0
x
x
0
x
x
Table 3-4. Extended Segment Register Offsets
Register
H
H
H
DS2
DS3
...
...
...
32).
Segment Start Address
Offset Value
Physical Address (24 Bits)
02H (Also used as vectored PC)
Offset
00H
PD70433