gc80c520g CORERIVER Semiconductor, gc80c520g Datasheet - Page 47

• Manufacturer Part Number: gc80c520g
• Description: Eprom / Rom / Romless Based 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

AD_EN
AD_REQ
AD_END
ADCF
6.12. ADC : Conversion Timing
AD_END
AD_REQ
Valid Bit
AD_EN
ADCF
: AD conversion Enable.
: AD conversion Request.
: This bit is set and cleared by H/W.
: AD conversion Interrupt Flag.
Set or Cleared by S/W.
Set by S/W and Cleared by H/W.
This bit must be set again
Cleared when AD conversion starts.
Set when the AD conversion ends.
Set by H/W and Cleared by S/W.
It should be cleared by ADC interrupt routine.
for AD conversion of each sample.
Set by S/W
Set by S/W
Setup Time
8F
ADC
Cleared by H/W
Cleared by H/W
8
7
6
(8F
ADC
5
@3V/5V
) x 9 bits = 72F
20MHz
10MHz
@5V
OSC
88F
8F
4
ADC
ADC
(ADCSEL[7:5])
011 (OSC/16)
100 (OSC/32)
011 (OSC/16)
100 (OSC/32)
000 (OSC/2)
001 (OSC/4)
010 (OSC/8)
000 (OSC/2)
001 (OSC/4)
010 (OSC/8)
3
Divide
[An Example of ADC Conversion Table]
ADC
2
1
0.625MHz
0.625MHz
0.312MHz
1.25MHz
1.25MHz
2.5MHz
2.5MHz
10MHz
5MHz
5MHz
F
ADC
MiDAS1.0 Family
0
Hold Time
T (1/F
8F
100ns
200ns
400ns
800ns
200ns
400ns
800ns
1.6us
1.6us
3.2us
ADC
ADC
)
ADC Interrupt
Set by H/W
Set by H/W
Conversion Time
1 Sample
140.8us
140.8us
281.6us
17.6us
35.2us
70.4us
17.6us
35.2us
70.4us
8.8us
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