P89C669 user manual page 71 indicate I2CON (91h) is bit addressable.! How can declare to compiler? My custom header file for P89C669 ; sfr I2CON = 0x91; sbit I2EN = I2CON^6; sbit STA = I2CON^5; sbit STO = I2CON^4; sbit SI = I2CON^3; sbit AA = I2CON^2; sbit CRSEL = I2CON^0; When compiled REG669.H(246): error A17: INVALID BASE IN BIT ADDRESS EXPRESSION
"I2CON (91h) is bit addressable" Really??? Usually, only addresses x0h and x8h are bit-addressable?!
P89C669 user manual page 71 indicate I2CON (91h) is bit addressable.! How does it indicate that? Pleas note that just because individual bits in a given SFR have names assigned to them in the documentation, that doesn't mean the SFR itself is bit-addressable. An SFR at address 0x91 quite certainly isn't. So you'll have to construct your own bit mangling routines to use it, like it's done on all those CPUs out there that don't have bit-addressables at all.
All PHILIPS or other micros has bit addressable I2C control register (I2CON) for I2C peripherals. Like P89LPC932, P89C66x and P89C669 !! Maybe this is silicon bug or documentation error.. P89C669 I2C peripheral working with no problem, but I2CON sfr control only posibble byte operators.
All PHILIPS or other micros has bit addressable I2C control register (I2CON) for I2C peripherals. evidently not the 669 Erik
ALl the "Bit Addressable" SFRs are indicated, in the datasheet, with light blue lettering above the bits. There's no error there. The 91H is black and to the left.
"All PHILIPS or other micros has bit addressable I2C control register (I2CON) ... Like ... P89C669" So you say it is bit-addressable... "P89C669 ... I2CON sfr control only posibble byte operators." ... then you say it isn't. It's got to be one or the other! The general consensus seems to that it is not bit-adressable, and the data sheet never said it was?
"P89C669 user manual page 71 indicate I2CON (91h) is bit addressable.!" (my emphasis) Yes - it's true! The User Manual (not the Data Sheet) does indeed state that on p71!! http://www.semiconductors.philips.com/acrobat/usermanuals/UM_P89C669_2.pdf However, the User Manual also states, on p17, "Sixteen addresses in the SFR space are both byte- and bit-addressable. The bit-addressable SFRs are those whose address ends in 0h or 8h (i.e. 80h, 88h,..., F8h). Bit addressing allows direct control and testing of bits in those SFRs." and Figure 8 on that page identifies the 15 (C0h is not used) bit-addressable SFRs - they do not include I2CON. The table on p39 gives the bit addresses where SFRs are bit addressable - I2CON has no bit addresses. On p14 of the Data Sheet, table 5 identifies bit addressable SFRs with note [1] and the legend "Bit Address" and the bit address values in blue - I2CON has no Note [1] and no bit addresses. http://www.semiconductors.philips.com/acrobat/datasheets/P89C669-01.pdf So, in conclusion, it looks like an error in just that one reference on p71 of the User Manual!