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參數(shù)資料
| 型號： | EM78869 |
| 廠商： | ELAN Microelctronics Corp . |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-Bit RISC Type Microprocessor |
| 中文描述： | 8位RISC型微處理器 |
| 文件頁數(shù)： | 12/38頁 |
| 文件大小： | 514K |
| 代理商： | EM78869 |
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EM78869
8-Bit RISC Type Microprocessor
8 of 34
07.12.2004 (V1.0)
This specification is subject to change without further notice.
6.1.9 R8 (Port 8)
Bit 7
R87
Bit 6
R86
Bit 5
R85
Bit 4
R84
Bit 3
R83
Bit 2
R82
Bit 1
R81
Bit 0
R80
Bit 0 ~7
:
Port 8 8-bit I/O registers
6.1.10 R9 (Port 9)
Bit 7
R97
Bit 6
R96
Bit 5
R95
Bit 4
R94
Bit 3
R93
Bit 2
R92
Bit 1
R91
Bit 0
R90
Bit 0 ~7
:
Port 9 8-bit I/O registers
6.1.11 RA (Mode Control Register)
Bit 7
IDLE
Bit 6
PLLEN
Bit 5
0
Bit 4
1
Bit 3
0
Bit 2
-
Bit 1
-
Bit 0
-
Bit 0 ~2
:
Unused
Bit 3
:
Reserved. Clear this bit to ‘0.’
Bit 4
:
Reserved. Always set to ‘1.’
Bit 5
:
Reserved. Clear this bit to '0'.
Bit 6
:
(Read/Write)
PLL enable signal
0
:
Disable PLL
1
:
Enable PLL
The relation between 32.768K and 3.579M (X’TAL) is explained in Fig. 5 below.
32.8KHz
RC/X'TAL
OSC
PLL
F
OSC
F
PLL
0
1
Fsystem
OSCI
OSCO
"OSCSEL" bit
of Code Option
PLLEN
Fig 5 The Relation between 32.768KHz and 3.579MHz
Bit 7
:
(IDLE) Sleep mode selection bit. This bit defines which SLEP instruction is to be
executed.
0
:
Sleep mode
1
:
Idle mode
When Sleep mode is defined, program is re-activated by Watch Dog time-out or
Port 9 signal input and resume running from the “Start” vector (0H).
When Idle mode is defined, program is re-activated by TCC clock or Watch Dog
time-out, or by Port 9, 7.0 ~ 7.3 signal input. Program will continue running from the
instruction that follows the “SLEP” instruction.
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| EM78871BQ | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-BIT MICRO-CONTROLLER |
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