gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 78
gc80c520a
Manufacturer Part Number
gc80c520a
Description
Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
Manufacturer
CORERIVER Semiconductor
Datasheet
1.GC80C520A.pdf
(187 pages)
- Current page: 78 of 187
- Download datasheet (2Mb)
Functional Description
If the ALE signal is enabled, the noise amplitude of the MiDAS1.0 family is similar with that of Company
A’s 80C52. However, Table 7-1 shows that the MiDAS1,0 family reduce noise largely by inhibiting the
ALE pin.
7.2 On-chip POR(Power-ON-Reset)
Conventional MCU
CORERIVER MCU
+
Cap. is not needed
80C52
MiDAS1.0
10uF
RESET
RESET
10 kOhms
10 kOhms
On-Chip POR
or Short
Figure 7-2 Comparison of POR
The MiDAS1.0 family contains the on-chip POR circuit. As a result, no resistor and capacitor is needed
for POR. So we can reduce system cost.
For correct operation of the on-chip POR circuit, the supply voltage slope must be in the range from
0.0V/us to 0.5V/us. That is, the supply voltage should be increasing monotonically until it reaches to the
normal range.
Page 78 of 187
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