参数资料
型号: 7548
厂商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 单芯片8位CMOS微机
文件页数: 50/73页
文件大小: 1255K
代理商: 7548
Rev.2.00
REJ03B0210-0200
Mar 15, 2007
Page 50 of 70
7548 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
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 10 lists the pin description (QzROM writing mode) and
Figure 67 shows the pin connections.
Refer to Figure 68 and 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 10 Pin description (QzROM writing mode)
Fig 67. Pin connection diagram (M37548G3/G2/G1FP)
Pin
V
CC
, V
SS
RESET
P2
1
/X
IN
P2
0
/X
OUT
P0
0
P0
5
P1
1
P1
5
CNV
SS
P1
0
P0
6
P0
7
Name
Power source
Reset input
Clock input
Clock output
I/O port
I/O
Input
Input
Input
Output
I/O
Function
Apply 1.8 to 5.5 V to V
CC
, and 0 V to V
SS
.
Reset input pin.
Set the same termination as the single-chip mode.
Input “H” or “L” level signal or leave the pin open.
V
PP
input
ESDA I/O
ESCLK input
ESPGMB input
Input
I/O
Input
Input
QzROM programmable power source pin.
Serial data I/O pin.
Serial clock input pin.
Read/program pulse input pin.
Package type: PLSP0020JB-A (20P2F-A)
P1
3
/AN
3
/KEY
3
/T2
OUT
P1
2
/AN
2
/KEY
2
/CMP
2
P1
1
/AN
1
/KEY
1
/CMP
1
P1
0
/AN
0
/KEY
0
/CMP
0
P0
7
(LED
7
)/S
RDY
P0
6
(LED
6
)/S
CLK
P0
5
(LED
5
)/TxD
P0
4
(LED
4
)/RxD
P0
3
(LED
3
)/CAP
0
P0
2
(LED
2
)
RESET
P1
5
/AN
5
/KEY
5
P1
4
/AN
4
/KEY
4
P2
0
/X
OUT
/X
COUT
V
SS
V
CC
P2
1
/X
IN
/X
CIN
CNV
SS
P0
0
(LED
0
)/INT
0
P0
1
(LED
1
)/INT
1
12
11
13
14
15
16
17
18
19
20
M
10
9
8
7
6
5
4
3
2
1
RESET
GND
V
CC
V
PP
ESDA
ESPGMB
ESCLK
: Set the same termination as
the single-chip mode.
: QzROM pin
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7548_07 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Standard Characteristics
7548_0710 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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