gc80c590ae CORERIVER Semiconductor, gc80c590ae Datasheet - Page 38
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gc80c590ae
Manufacturer Part Number
gc80c590ae
Description
Flash / Isp / Iap 8-bit Turbo Microcontrollers
Manufacturer
CORERIVER Semiconductor
Datasheet
1.GC80C590AE.pdf
(132 pages)
- Current page: 38 of 132
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AUXAD (BFh) : High Address Register for MOVX with Ri
AUXAD.7 AUXAD.6 AUXAD.5 AUXAD.4 AUXAD.3 AUXAD.2 AUXAD.1 AUXAD.0
IOCFG (C7h) : I/O Configuration Register
R/W(0) R/W(0) R/W(0) R/W(0) R/W(0) R/W(0) R/W(0) R/W(0)
6.5. I/O Ports : PORT Configuration
MiDAS2.0 family provides a dedicated address register for
PORT1 enable of 44-pin packages.
-
PKGOPT : Must be “1” for 44-pin package.
If ENAUX bit (IOCFG.3) is set, “MOVX A, @Ri” and “MOVX @Ri, A”
ENAUX
instructions refer to AUXAD instead of P2 register for high address.
that an user accesses only the internal RAM (0000h ~ 06FFh).
If configured so, the AUXAD register provides the high byte of address for
Then, the PORT2 can be used exclusively as general purpose I/O or PCA I/O on the condition
To enable this feature, set ENAUX bit (IOCFG.3) to 1.
To use pdata type in KEIL compiler with MiDAS2.0, User must set ENAUX bit.
To use digital I/O or an alternative function of PORT1, an user must set PKGOPT bit (IOCFG.0) to 1.
This configuration is required only for 44-PLCC and 44-MQFP.
-
: Select AUXAD for MOVX with Ri.
1 = AUXAD register serves high address for MOVX with Ri.
0 = P2 register serves high address for MOVX with Ri.
-
Semiconductor Co., Ltd.
-
R/W(0)
ENAUX
-
-
PKGOPT
R/W(0)
movx
instructions using Ri.
movx
instruction instead of P2 SFR.
MiDAS2.0 Family
[38]
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