Download Datasheet - Renesas Electronics

38D5 Group
QzROM Writing Mode
In the QzROM writing mode, the user ROM area can be
rewritten while the microcomputer is mounted on-board by using
a serial programmer which is applicable for this microcomputer.
Table 15 lists the pin description (QzROM writing mode) and
Figure 64 and Figure 65 show the pin connections.
Refer to Figure 66 to Figure 69 for examples of a connection
with a serial programmer.
Contact the manufacturer of your serial programmer for serial
programmer. Refer to the user ’s manual of your serial
programmer for details on how to use it.
Table 15 Pin description (QzROM writing mode)
Pin
VCC, VSS
RESET
XIN
XOUT
VREF
AVSS
P00−P07
P10−P17
P20−P27
P33−P37
P40, P44−P47
P50−P57
P60−P67
P72−P74
P70, P71
OSCSEL
P41
P42
P43
Name
Power source
Reset input
Clock input
Clock output
Analog reference
voltage
Analog power source
I/O port
Input port
VPP input
ESDA input/output
ESCLK input
ESPGMB input
Rev.3.04 May 20, 2008
REJ03B0158-0304
I/O
Input
Input
Input
Output
Input
Function
• Apply 2.7 to 5.5 V to VCC, and 0 V to VSS.
• Reset input pin for active “L”. Reset occurs when RESET pin is
held at an “L” level for 16 cycles or more of XIN.
• Set the same termination as the single-chip mode.
• Input the reference voltage of A/D converter to VREF.
Input
I/O
• Connect AVss to Vss.
• Input “H” or “L” level signal or leave the pin open.
Input
Input
I/O
Input
Input
• Input “H” or “L” level signal or leave the pin open.
• QzROM programmable power source pin.
• Serial data I/O pin.
• Serial clock input pin.
• Read/program pulse input pin.
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