Z8FMC04100 ZILOG [Zilog, Inc.], Z8FMC04100 Datasheet - Page 264

• Manufacturer Part Number: Z8FMC04100
• Description: Z8 Encore-R Motor Control Flash MCUs
• Manufacturer: ZILOG [Zilog, Inc.]

242
Z8 Encore!
Product Specification
On-Chip Debugger
Caution:
®
Motor Control Flash MCUs
receives data. Data transmission is half-duplex, in that transmit and receive cannot occur
simultaneously. The serial data on the DBG pin is sent using the standard asynchronous
data format defined in RS-232. This pin interfaces the Z8FMC16100 Series Flash MCU
device to the serial port of a host PC using minimal external hardware. Two different
methods for connecting the DBG pin to an RS-232 interface are depicted in Figures 42
and 43 .
Figure 42. Interfacing the On-Chip Debugger’s DBG Pin with an RS-232 Interface (1)
Figure 43. Interfacing the On-Chip Debugger’s DBG Pin with an RS-232 Interface (2)
RS232 RX
RS232 RX
RS232 TX
RS232 TX
For operation of the Z8FMC16100 Series Flash MCU, all power pins (V
must be supplied with power, and all ground pins (V
grounded. The DBG pin should always be connected to V
up resistor.
Transceiver
Transceiver
RS-232
RS-232
Open-Drain
P R E L I M I N A R Y
Buffer
Diode
V
DD
V
DD
10K‰
10K‰
DBG pin
DBG pin
SS
and AV
DD
through an external pull-
SS
) must be properly
DD
PS024604-1005
and AV
DD
)