參數(shù)資料
型號(hào)： UPD784037YGC
廠商： NEC Corp.
英文描述： TRANS PREBIASED DUAL NPN SOT363
中文描述： 16-/8-bit的單晶片微控制器
文件頁(yè)數(shù)： 19/94頁(yè)
文件大小： 503K
代理商： UPD784037YGC
19
μ
PD784035Y, 784036Y, 784037Y, 784038Y
6. CPU ARCHITECTURE
6.1 Memory Space
A memory space of 1 MByte can be accessed. Mapping of the internal data area (special function registers and
internal RAM) can be specified the LOCATION instruction. The LOCATION instruction must be always executed after
RESET cancellation, and must not be used more than once.
(1) When LOCATION 0 instruction is executed
Internal memory
The internal data area and internal ROM area are mapped as follows:
Part Number
Internal Data Area
Internal ROM Area
μ
PD784035Y
0F700H-0FFFFH
00000H-0BFFFH
μ
PD784036Y
00000H-0F6FFH
μ
PD784037Y
0F100H-0FFFFH
00000H-0F0FFH
10000H-17FFFH
μ
PD784038Y
0EE00H-0FFFFH
00000H-0FDFFH
10000H-1FFFFH
Caution The following areas that overlap the internal data area of the internal ROM cannot be used when
the LOCATION 0 instruction is executed.
Part Number
Unusable Area
μ
PD784035Y
–
μ
PD784036Y
0F700H-0FFFFH (2304 Bytes)
μ
PD784037Y
0F100H-0FFFFH (3840 Bytes)
μ
PD784038Y
0EE00H-0FFFFH (4608 Bytes)
External memory
The external memory is accessed in external memory expansion mode.
(2) When LOCATION 0FH instruction is executed
Internal memory
The internal data area and internal ROM area are mapped as follows:
Part Number
Internal Data Area
Internal ROM Area
μ
PD784035Y
FF700H-FFFFFH
00000H-0BFFFH
μ
PD784036Y
00000H-0FFFFH
μ
PD784037Y
FF100H-FFFFFH
00000H-17FFFH
μ
PD784038Y
FEE00H-FFFFFH
00000H-1FFFFH
External memory
The external memory is accessed in external memory expansion mode.
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