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MC68HC912BD32 Datasheet, PDF (265/292 Pages) Freescale Semiconductor, Inc – Advance Information
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Freescale Semiconductor, Inc.
Preliminary Electrical Characteristics
Table 72 ATD AC Characteristics (Operating)
VDD = 5.0 Vdc ±5%, VSS = 0 Vdc, TA = TL to TH, ATD Clock = 2 MHz, unless otherwise noted
Characteristic
Symbol Min Max Unit
MCU clock frequency (p-clock)
ATD operating clock frequency
ATD 8-Bit conversion period
clock cycles(1)
conversion time(2)
fPCLK
2.0 10.0 MHz
fATDCLK
0.5
2.0
MHz
nCONV8
18
tCONV8
9
32 cycles
16
µs
ATD 10-Bit conversion period
clock cycles1
conversion time2
Stop and ATD power up recovery time(3)
VDDA = 5.0V
nCONV10
20
tCONV10
10
tSR
34 cycles
17
µs
10
µs
1. The minimum time assumes a final sample period of 2 ATD clock cycles while the maximum time as-
sumes a final sample period of 16ATD clocks.
2. This assumes an ATD clock frequency of 2.0MHz.
3. From the time ADPU is asserted until the time an ATD conversion can begin.
Table 73 EEPROM Characteristics
VDD = 5.0 Vdc ±5%, VSS = 0 Vdc, TA = TL to TH, unless otherwise noted
Characteristic
Symbol Min Typical Max Unit
Minimum programming clock frequency(1)
fPROG
1.0
MHz
Programming time
tPROG
10
ms
Clock recovery time, following STOP, to continue programming tCRSTOP
tPROG+ 1 ms
Erase time
tERASE
10
ms
Write/erase endurance
10,000
30,000
(2)
cycles
Data retention
10
1. RC oscillator must be enabled if programming is desired and fSYS < fPROG.
2. If average TH is below 85° C.
years
7-elec
Preliminary Electrical Characteristics
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MC68HC912BD32 Rev 1.0
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