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| MC912DG128ACPVE Datasheet, PDF (426/478 Pages) Freescale Semiconductor, Inc – Upward compatible with M68HC11 instruction set | |||
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Freescale Semiconductor, Inc.
Electrical Specifications
Table 21-6. Analog Converter Characteristics (Operating)
VDD = 5.0 Vdc ±10%, VSS = 0 Vdc, TA = TL to TH, ATD Clock = 2 MHz, unless otherwise noted
Characteristic
Symbol
Min Typical Max
8-bit resolution(1)
1 count
20
8-bit absolute error,(2)2, 4, 8, and 16 ATD sample clocks
AE
â1
+1
Unit
mV
count
10-bit resolution(1)
1 count
5
mV
10-bit absolute error(2) 2, 4, 8, and 16 ATD sample clocks
AE
â2.5
2.5 count
1. At VRH â VRL = 5.12V, one 8-bit count = 20 mV, and one 10-bit count = 5mV.
2. These values include quantization error which is inherently 1/2 count for any A/D converter.
Absolute errors only guaranteed when VRL=VSS, VRH=VDD and when external source impedence is close to zero.
Table 21-7. ATD AC Characteristics (Operating)
VDD = 5.0 Vdc ±10%, VSS = 0 Vdc, TA = TL to TH, ATD Clock = 2 MHz, unless otherwise noted
Characteristic
Symbol
Min
Max
ATD operating clock frequency
fATDCLK
0.5
2.0
Conversion time per channel
0.5 MHz ⤠fATDCLK ⤠2 MHz
16 ATD clocks
30 ATD clocks
tCONV
8.0
32.0
15.0
60.0
Stop and ATD power up recovery time(1)VDDA = 5.0V
tSR
10
1. From the time ADPU is asserted until the time an ATD conversion can begin.
Unit
MHz
µs
µs
µs
Technical Data
426
MC68HC912DT128A â Rev 4.0
Electrical Specifications
For More Information On This Product,
Go to: www.freescale.com
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