gc80c521a CORERIVER Semiconductor, gc80c521a Datasheet - Page 77

• Manufacturer Part Number: gc80c521a
• Description: Flash / Isp / Iap 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

AD_EN
AD_REQ
AD_END
ADCF
6.14. ADC : Conversion Timing
AD_END
AD_REQ
Valid Bit
AD_EN
ADCF
: ADC Block Enable Signal.
: ADC Conversion Request Start Bit.
: Set or Cleared by H/W.
: ADC Interrupt Flag.
Set or Cleared by S/W.
Set by S/W and Cleared by H/W.
This bit must be set at each sample conversion.
Clear when Conversion started.
Set when Conversion ended.
Set by H/W and Cleared by S/W.
User should clear ADCF bit in ADC interrupt routine.
User must check the ADCF flag instead of AD_END.
Set by S/W
Set by S/W
Setup Time
8F
ADC
Cleared by H/W
Cleared by H/W
9
8
7
(8F
6
System Clock
20MHz @ 5V
10MHz @ 3V
10MHz @ 3V
ADC
5MHz @ 3V
96F
(F
) x 10 bits = 80F
8F
PERI
5
ADC
ADC
)
4
[An Example of ADC Conversion Table]
(ADIV=0)
3
ADC
F
F
F
F
Divide
PERI
PERI
PERI
PERI
/2
/2
/2
/2
2
MiDAS1.0B Family
1
2.5MHz
10MHz
5MHz
5MHz
F
ADC
0
(1/F
Hold Time
100ns
200ns
200ns
400ns
T
8F
ADC
ADC
ADC
)
Conversion Time
ADC Interrupt
Set by H/W
Set by H/W
1 Sample
19.2us
19.2us
38.4us
9.6us
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