EM78860AQ Ver la hoja de datos (PDF) - ELAN Microelectronics
Número de pieza
componentes Descripción
Fabricante
EM78860AQ Datasheet PDF : 26 Pages
| |||
EM78P860
8 -BIT MICRO-CONTROLLER
5. R4 ( RAM Select Register )
• Bit 0 ~ 5 are used to select up to 64 register in the indirect addressing mode.
• Bit 6 ~ 7 determine which bank is actived among the 4 banks.
• See the configuration of the data memory in Fig. 4.
6. R5 ( Program Page Select Register)
7
6
5
4
3
2
1
0
-
-
-
-
PS3
PS2
PS1
PS0
• Bit 0 (pS0) ~ 3 (PS3) Page selec bits.
Page select bits
PS3
PS2
PS1
PS0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
program memory page (Address)
Page 0
Page 1
Page 2
Page 3
Page 4
page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
Page 13
Page 14
Page 15
• User can use PAGE instruction to change page. To maintain program page by user. Otherwise, user can use
far jump (FJMP) or far call (FCALL) instructions to program user's code. And the program page is maintained
by EMC's complier. It will change user's program by inserting instruction within program.
• Bit4~7 : unused
7. R6 ~R9 ( Port 6 ~ Port 9)
• Five 8-bit I/O registers.
8. RA
7
6
5
4
3
2
1
0
IDLE
/358E
/LPD /LOW-BAT
0
0
0
0
• Bit0 ~ Bit3 unused, please set to "0"
* This specification is subject to be changed without notice.
4.17.2000 6
Share Link: 