Example Connection For On-Board Writing - Philips CEM2100/00 Service Manual

GND
Note 1: For connection of other pins, refer to " Table 20-3 Pin Function in the Serial PROM Mode ".

20.3.3 Example Connection for On-Board Writing

Figure 20-3 shows an example connection to perform on-board wring.
VDD
TEST
BOOT / RXD1 (P01)
TXD1 (P02)
RESET
XOUT
VSS
Figure 20-3 Example Connection for On-Board Writing
Note 1: When other parts on the application board effect the UART communication in the serial PROM mode, iso-
late these pins by a jumper or switch.
Note 2: When the reset control circuit on the application board effects activation of the serial PROM mode, isolate
the pin by a jumper or switch.
Note 3: For connection of other pins, refer to " Table 20-3 Pin Function in the Serial PROM Mode ".
T5CL8
XIN
BOOT / RXD1 (P01)
XOUT TXD1 (P02)
VSS
Figure 20-2 Serial PROM Mode Pin Setting
Serial PROM mode
MCU mode
(Note 2)
RESET
Other
control
parts
(Note 1)
XIN
Application board
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VDD(4.5 V to 5.5 V)
VDD
Serial PROM mode
TEST
MCU mode
pull-up
RESET
Pull-up
RC power-on
reset circuit
GND
External control board
T5CL8
External control
VDD(4.5 V to 5.5 V)
Level
PC control
converter