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參數(shù)資料
| 型號： | HE84760B |
| 廠商： | King Billion Electronics Co., Ltd. |
| 英文描述： | 8-bit Micro-controller |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 9/51頁 |
| 文件大小： | 487K |
| 代理商： | HE84760B |
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6.
ROM Map Configurations
KING BILLION ELECTRONICS CO., LTD
駿
億
電
子
股
份
有
限
公
司
HE84760B
HE80004 Series
June 29, 2005
This specification is subject to change without notice. Please contact sales person for the latest version before use.
9
V1.0
The chip has built-in 512K bytes internal ROM. In addition, address and data buses are provided to access
External ROM. The MCU can access up to 4M bytes program ROM and up to 16M bytes data space
through external buses. The SEG[47..40], SEG[39..16] pads are used as either data and address buses for
external ROM or LCD segment driver pads depending on the mask option MO_EXMEM. When the
external ROM mask option is selected, the MCU will retrieve the instructions and data from external
ROM through the address and data buses.
The bit 14 ~ 15 bit of 16-bit logical program address can be mapped to any one (16K bytes per page) of
256 pages through mapping registers PSA1, PSA2, PSA3. As logical page 0 can not be moved and is
always physical page 0, the PSA1 ~ PSA3 contain the physical page addresses of logical pages 1 ~ 3.
Logical Address
A15 A14 A13 A12 A11 A10 A9
A8
Page Addr. A13 A12 A11 A10 A9
A8
A[15..14] Logical Page
Physical Page Address Physical Address
00
0
01
1
10
2
11
3
Register Address
Type
PSA1
0x2C
R/W
A21
A20
A19
PSA2
0x2D
R/W
A21
A20
A19
PSA3
0x2E
R/W
A21
A20
A19
A7
A7
A6
A6
A5
A5
A4
A4
A3
A3
A2
A2
A1
A1
A0
A0
0
00A[13..0]
PSA1+A[13..0]
PSA2+A[13..0]
PSA3+A[13..0]
PSA1
PSA2
PSA3
Bits Definition
A18
A18
A18
Reset
0x01
0x02
0x03
A17
A17
A17
A16
A16
A16
A15
A15
A15
A14
A14
A14
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