參數(shù)資料
型號(hào): Q67120-C508
英文描述: IC-SM-8-BIT CPU 12-MHZ
中文描述: 集成電路釤8位CPU的12兆赫
文件頁數(shù): 95/121頁
文件大?。?/td> 1000K
代理商: Q67120-C508
OTP Memory Operation
C501
Semiconductor Group
9-2
9.2
Quick-Pulse Programming
The setup for microcontroller quick-pulse programming is shown in
figure 9-28
. Note that the
C501-1E is running with a 4 to 6 MHz oscillator The reason the oscillator needs to be running is that
the device is executing internal address and program data transfers.
Figure 9-28
C501-1E OTP Memory Programming Configuration
The address of the OTP memory location to be programmed is applied to port 1 and 2. The code
byte to be programmed into that location is applied to port 0. RESET, PSEN and pins of port 2 and
3 specified in
table 9-11
are held at the “Program code data“ levels. The ALE/PROG signal is
pulsed low 25 times as shown in
figure 9-29
.
Figure 9-29
C501-1E ALE/PROG Waveform
MCS03232
Port 1
RESET
P3.6
P3.7
XTAL2
XTAL1
V
SS
CC
V
Port 0
V
PP
EA/
ALE/PROG
PSEN
P2.7
P2.6
P2.0 - P2.4
Programming
Data
+12.75 V
25 x 100 s
Low Pulses
0
1
0
A8 - A12
A0 - A7
1
1
1
4 - 6 MHz
C501-1E
+5 V
MCT03234
ALE/PROG
10 s min.
25 Pulses
1
0
ALE/PROG
μ
μ
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