MB91F669PMC-G-JNE1 Fujitsu, MB91F669PMC-G-JNE1 Datasheet - Page 90

• Manufacturer Part Number: MB91F669PMC-G-JNE1
• Description: MCU, 32BIT, FR80, 128K FLASH, 64LQFP
• Manufacturer: Fujitsu

Specifications of MB91F669PMC-G-JNE1

• No. Of I/o's: 50
• Ram Memory Size: 16KB
• Cpu Speed: 33MHz
• No. Of Timers: 1
• No. Of Pwm Channels: 4
• Digital Ic Case: RoHS Compliant
• Core Size: 32bit
• Program Memory Size: 128KB
• Oscillator Type: Internal, External
• Controller Family/series: MB91665
• Rohs Compliant: Yes

MB91665 Series
90
(Continued)
*2 : The current when the CPU is in stop mode and the A/D converter is not operating.
*3 : Compare time = {(CT  1)  10  4}  peripheral clock (PCLK) period. (CT indicates compare time setting bits.)
*4 : There are no AN10 and AN11 in MB91F668.
The output impedance of the external circuit connected to the analog input affects the sampling time of the A/D
converter. Design the output impedance of the output circuit such that the required sampling time is less than the
value of T
If the sampling time is set as 600 ns,
And the impedance of the external circuit therefore needs to be 4.8 k or less.
(Equation 1) Ts  (Rin  Rext)  Cin  7
The condition of the minimum compare time is when CT  1 and PCLK  33 MHz.
Analog
signal source
S
calculated from the following equation.
Ts
Rin
Cin
Rext
600 ns  (5.3 k  Rext)  8.5 pF  7
Rext  4.8 k
: Sampling time
: Input resistance of A/D  5.3 k
: Input capacitance of A/D  8.5 pF
: Output impedance of external circuit
Rext
AN0 to AN11
Analog input pin
Rin
Cin
Comparator
Approx. 5.3 k
Rin
Approx. 8.5 pF
DS07-16916-2E
Cin