参数资料
型号: 784216A
厂商: NEC Corp.
英文描述: MOS INTEGRATED CIRCUIT
中文描述: 马鞍山集成电路
文件页数: 22/100页
文件大小: 564K
代理商: 784216A
Data Sheet U14121EJ2V0DS00
22
μ
PD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
6. CPU ARCHITECTURE
6.1 Memory Space
A memory space of 1 MB can be accessed. Mapping of the internal data area (special function registers and
internal RAM) can be specified by the LOCATION instruction. The LOCATION instruction must always be executed
after reset cancellation, and must not be used more than once.
(1) When LOCATION 0H 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
PD784214A,
μ
PD784214AY
μ
PD784215A,
μ
PD784215AY
μ
PD784216A,
μ
PD784216AY
μ
PD784217A,
μ
PD784217AY
μ
PD784218A,
μ
PD784218AY
0F100H to 0FFFFH
00000H to 0F0FFH
10000H to 17FFFH
0EB00H to 0FFFFH
00000H to 0EAFFH
10000H to 1FFFFH
0DF00H to 0FFFFH
00000H to 0DEFFH
10000H to 1FFFFH
00000H to 0CCFFH
10000H to 2FFFFH
0CD00H to 0FFFFH
00000H to 0CCFFH
10000H to 3FFFFH
Caution The following areas that overlap the internal data area of the internal ROM cannot be used
when the LOCATION 0H instruction is executed.
Part Number
Unusable Area
μ
PD784214A,
μ
PD784214AY
μ
PD784215A,
μ
PD784215AY
μ
PD784216A,
μ
PD784216AY
μ
PD784217A,
μ
PD784217AY
μ
PD784218A,
μ
PD784218AY
0F100H to 0FFFFH (3,840 bytes)
0EB00H to 0FFFFH (5,376 bytes)
0DF00H to 0FFFFH (8,448 bytes)
0CD00H to 0FFFFH (13,056 bytes)
External memory
The external memory is accessed in external memory expansion mode.
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相关代理商/技术参数
参数描述
784216AY 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784217A 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784217AY 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784218A 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784218AY 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT