SAK-XC2237M-104F40L Infineon Technologies, SAK-XC2237M-104F40L Datasheet - Page 83

• Manufacturer Part Number: SAK-XC2237M-104F40L
• Description: IC MCU 16BIT 320KB FLASH 64LQFP
• Manufacturer: Infineon Technologies
• Series: XC22xxMr

Specifications of SAK-XC2237M-104F40L

• Core Processor: C166SV2
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, I²C, LIN, SPI, SSC, UART/USART, USI
• Peripherals: I²S, POR, PWM, WDT
• Number Of I /o: 38
• Program Memory Size: 832KB (832K x 8)
• Program Memory Type: FLASH
• Ram Size: 50K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 9x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-LFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

The timing in the AC Characteristics refers to TCSs. Timing must be calculated using the
minimum TCS possible under the given circumstances.
The actual minimum value for TCS depends on the jitter of the PLL. Because the PLL is
constantly adjusting its output frequency to correspond to the input frequency (from
crystal or oscillator), the accumulated jitter is limited. This means that the relative
deviation for periods of more than one TCS is lower than for a single TCS (see formulas
and
This is especially important for bus cycles using waitstates and for the operation of
timers, serial interfaces, etc. For all slower operations and longer periods (e.g. pulse train
generation or measurement, lower baudrates, etc.) the deviation caused by the PLL jitter
is negligible.
The value of the accumulated PLL jitter depends on the number of consecutive VCO
output cycles within the respective timeframe. The VCO output clock is divided by the
output prescaler K2 to generate the system clock signal
is K2 × T, where T is the number of consecutive
The maximum accumulated jitter (long-term jitter) D
D
This maximum value is applicable, if either the number of clock cycles T > (
the prescaler value K2 > 17.
In all other cases for a timeframe of T × TCS the accumulated jitter D
D
f
Example, for a period of 3 TCSs @ 33 MHz and K2 = 4:
D
D
= 5.97 × [0.768 × 2 / 26.39 + 0.232]
= 1.7 ns
Example, for a period of 3 TCSs @ 33 MHz and K2 = 2:
D
D
= 7.63 × [0.884 × 2 / 26.39 + 0.116]
= 1.4 ns
Data Sheet
SYS
Tmax
T
max
3
max
3
= 5.97 × [(1 - 0.058 × 4) × (3 - 1) / (0.83 × 33 - 1) + 0.058 × 4]
= 7.63 × [(1 - 0.058 × 2) × (3 - 1) / (0.83 × 33 - 1) + 0.058 × 2]
[ns] = D
Figure
in [MHz] in all formulas.
= ±(220 / (4 × 33) + 4.3) = 5.97 ns (Not applicable directly in this case!)
= ±(220 / (2 × 33) + 4.3) = 7.63 ns (Not applicable directly in this case!)
[ns] = ±(220 / (K2 ×
Tmax
19).
× [(1 - 0.058 × K2) × (T - 1) / (0.83 ×
f
SYS
) + 4.3)
XC2000 Family Derivatives / Base Line
83
f
SYS
Tmax
f
cycles (TCS).
SYS
f
SYS
is defined by:
- 1) + 0.058 × K2]
. The number of VCO cycles
XC2238M, XC2239M
Electrical Parameters
T
is determined by:
V2.0, 2009-03
f
SYS
/ 1.2) or