參數(shù)資料
型號: 38D5
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機
文件頁數(shù): 66/141頁
文件大?。?/td> 2027K
代理商: 38D5
Rev.3.01
REJ03B0158-0301
Aug 08, 2007
Page 66 of 134
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
Name
I/O
Input
Input
Function
V
CC
, V
SS
Power source
Reset input
Apply 2.7 to 5.5 V to V
CC
, and 0 V to V
SS
.
RESET
Reset input pin for active “L”. Reset occurs when RESET pin is
held at an “L” level for 16 cycles or more of X
IN
.
Set the same termination as the single-chip mode.
X
IN
X
OUT
V
REF
Clock input
Clock output
Analog reference
voltage
Analog power source
I/O port
Input
Output
Input
Input the reference voltage of A/D converter to V
REF
.
AV
SS
P0
0
P0
7
P1
0
P1
7
P2
0
P2
7
P3
3
P3
7
P4
0
, P4
4
P4
7
P5
0
P5
7
P6
0
P6
7
P7
2
P7
4
P7
0
,
P7
1
OSCSEL
P4
1
P4
2
P4
3
Input
I/O
Connect AVss to Vss.
Input “H” or “L” level signal or leave the pin open.
Input port
V
PP
input
ESDA input/output
ESCLK input
ESPGMB input
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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