DF2170VTE33 Renesas Electronics America, DF2170VTE33 Datasheet - Page 556

• Manufacturer Part Number: DF2170VTE33
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2170VTE33

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: HD64F2170VTE33; HD64F2170VTE33

18.5
The H8S/2170 F-ZTAT have a voltage step down circuit that automatically lowers the power
supply voltage, inside the microcomputer, to an adequate level. A capacitor (one 0.1-µF capacitor)
should be connected between the VCL pin (a pin for internal voltage step down circuit) and VSS
pin to stabilize the internal voltage. Figure 18.29 shows how to connect the capacitor. Do not
connect the V
(Connect the V
Rev. 2.00, 03/04, page 522 of 534
Use Note (Internal Voltage Step Down)
CC
CC
power-supply to the VCL pin. Doing so could permanently damage the LSI.
An external capacitor to
stabilize the internal voltage
One 0.1-µF capacitor
VDo not connect the Vcc power-supply to the VCL pin.
If connected, the LSI may be permanently damaged.
Connect the VCC power-Supply to the other Vcc pin in the usual way.
Use a multilayer ceramic capacitor (one 0.1-µF capacitor) for this circuit,
and place it/them near the VCL pin.
power-supply to the V
Figure 18.29 VCL Capacitor Connection Method
CC
pin, in the usual way.)
VCL
VSS