Console, Modem, I2c devices – Zilog EZ80F91 User Manual
Page 46: Console modem, C devices
eZ80F91 Development Kit
User Manual
UM014220-0508
eZ80 Development Kit
41
Console
Connector P2 is the RS-232 terminal, which can be used for observing the
console output. P2 can be connected to the PC running HyperTerminal, if
required.
Modem
Connector P3 provides a terminal for connecting an external modem, if
used with the eZ80F91 Development Kit.
I
2
C Devices
The two I
2
C devices on the eZ80Acclaim!
®
Development Kit are the U2
EEPROM and the U13 Configuration register. The EEPROM provides 16
KB of memory. The Configuration register provides access to control the
configuration of an application-specific function at the Application Mod-
ule Interface. Neither device is utilized by the eZ80F91 Development Kit
software. You are free to develop proprietary software for these two
devices. The addresses for accessing these devices are listed in
Table 28. I
2
C Addresses
Device/Bit #
7
6
5
4
3
2
1
0
EEPROM (U10)*
1
0
1
0
0
A1
A0
R/W
Configuration Register (U13)
1
0
0
1
1
1
0
R/W
Note: *EEPROM address bits A0 and A1 are configured for 0s.