MC9S12GRMV1 Datasheet, PDF (1223/1292 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

Electrical Characteristics
Table A-33. Static Electrical Characteristics - DAC_8B5V
Characteristics noted under conditions 3.13V <= VDDA <= 5.5V>, -40˚C < Tj < 150˚C >, VRH=VDDA, VRL=VSSA
unless otherwise noted. Typical values noted reflect the approximate parameter mean at T_A = 25˚C under nominal
conditions unless otherwise noted.
Num C
Ratings
Symbol
Min
Typ
Max
Unit
8 C Output Voltage
unbuffered range A or B (load >= 50MΩ)
9 P Output Voltage (DRIVE bit = 0)¹
buffered range A (load >= 100KΩ to VSSA)
buffered range A (load >= 100KΩ to VDDA)
buffered range B (load >= 100KΩ to VSSA)
buffered range B (load >= 100KΩ to VDDA)
10 P Output Voltage (DRIVE bit = 1)²
buffered range B with 6.4KΩ load into resistor
divider of 800Ω /6.56KΩ between VDDA and
VSSA.
(equivalent load is >= 65KΩ to VSSA) or
(equivalent load is >= 7.5KΩ to VDDA)
11 D Buffer Output Capacitive load
12 P Buffer Output Offset
13 P Settling time
14 D Reverence voltage high
1 _{DRIVE bit = 1 is not recommended in this case.}
2 _{DRIVE bit = 0 is not allowed with this high load.}
V_out
full DAC Range A or B
V
0
0.15
V_out
-
VDDA-0.15
-
VDDA
V
full DAC Range B
V_out
full DAC Range B
V
C_load
V_offset
t_delay
V_refh
0
-
100
pF
-30
-
+30
mV
-
3
5
µs
VDDA-0.1V VDDA VDDA+0.1V V
A.7 NVM
A.7.1 Timing Parameters
The time base for all NVM program or erase operations is derived from the bus clock using the FCLKDIV
register. The frequency of this derived clock must be set within the limits specified as f_NVMOP. The NVM
module does not have any means to monitor the frequency and will not prevent program or erase operation
at frequencies above or below the specified minimum. When attempting to program or erase the NVM
module at a lower frequency, a full program or erase transition is not assured.
The following sections provide equations which can be used to determine the time required to execute
specific flash commands. All timing parameters are a function of the bus clock frequency, f_NVMBUS. All
program and erase times are also a function of the NVM operating frequency, f_NVMOP. A summary of key
timing parameters can be found in Table A-34.
Freescale Semiconductor
MC9S12G Family Reference Manual, Rev.1.23
1225