MC9S12T64 Datasheet, PDF (144/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Multiplexed External Bus Interface (MEBI)
Table 29 External System Pins Associated With MEBI (Continued)
Pin Name
BKGD/SI/MODC
/TAGHI
Pin Functions
Description
MODC
At the rising edge on RESET, the state of this pin is registered into the
MODC bit to set the mode. (This pin always has an internal pullup.)
BKGD
Pseudo-open-drain communication pin for the single-wire background
debug mode. There is an internal pullup resistor on this pin.
SI
The serial data from the host system to the FBDM uses this pin in SPI
mode.
TAGHI
When instruction tagging is on, a 0 at the falling edge of E tags the high
half of the instruction word being read into the instruction queue.
MC9S12T64Revision 1.1.1
Multiplexed External Bus Interface (MEBI)
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