Renesas RL78/G13 User Manual

RL78/G13 CHAPTER 25 FLASH MEMORY
R01UH0146EJ0100 Rev.1.00 934
Sep 22, 2011
25.2.2 Communication Mode
Communication between the external device and the RL78/G13 is established by serial communication using the
TOOLTxD and TOOLRxD pins via the dedicated UART of the RL78/G13.
Transfer rate: 1 M, 500 k, 250 k, 115.2kbps
Figure 25-4. Communication with External Device
V DD /EV DD
V SS /EV SS /REGC
Note
RESET
TOOLTxD
V
DD
GND
/RESET
RL78/G13
RxD
TxD
External device
(such as microcontroller
and ASIC)
TOOL0PORT
TOOLRxD
Note Connect REGC pin to ground via a capacitor (default: 0.47
μ F).
Caution Make EV
DD the same potential as VDD.
The external device generates the following signals for the RL78/G13.
Table 25-3. Pin Connection
External Device RL78/G13 Connection
Signal Name I/O Pin Function Pin Name
VDD I/O VDD voltage generation/power monitoring VDD, EVDD
GND
−
Ground
V
SS, EVSS, REGC
Note
CLK Output Clock output
− ×
RESETOUT Output Reset signal output RESET
RxD Input Receive signal TOOL0TxD
TxD Output Transmit signal TOOL0RxD
PORT Output Mode signal TOOL0
SCK Output Transfer clock
− ×
Note Connect REGC pin to ground via a capacitor (default: 0.47
μ F).
Caution Make EV
DD the same potential as VDD.
Remark
: Be sure to connect the pin.
×: The pin does not have to be connected.
<R>
<R>

Renesas RL78/G13 Specifications

General

Brand	Renesas
Model	RL78/G13
Category	Computer Hardware
Language	English