DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 92

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 3 MCU Operating Modes
Bits 6 to 4—Standby Timer Select (STS2 to STS0): These bits select the length of time the CPU
and on-chip supporting modules wait for the internal clock oscillator to settle when software
standby mode is exited by an external interrupt. When using a crystal oscillator, set these bits so
that the waiting time will be at least 7 ms at the system clock rate. For further information about
waiting time selection, see section 20.4.3, Selection of Waiting Time for Exit from Software
Standby Mode.
Bit 3—User Bit Enable (UE): Selects whether to use the UI bit in the condition code register as a
user bit or an interrupt mask bit.
Bit 2—NMI Edge Select (NMIEG): Selects the valid edge of the NMI input.
Bit 1—Reserved: Read-only bit, always read as 1.
Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is
initialized by the rising edge of the RES signal. It is not initialized in software standby mode.
Rev. 3.00 Mar 21, 2006 page 62 of 814
REJ09B0302-0300
Bit 6: STS2
0
1
Bit 3: UE
0
1
Bit 2: NMIEG
0
1
Bit 0: RAME
0
1
Bit 5: STS1
0
1
0
1
Description
UI bit in CCR is used as an interrupt mask bit
UI bit in CCR is used as a user bit
Description
An interrupt is requested at the falling edge of NMI
An interrupt is requested at the rising edge of NMI
Description
On-chip RAM is disabled
On-chip RAM is enabled
Bit 4: STS0
0
1
0
1
0
1
—
Waiting time = 8,192 states
Waiting time = 16,384 states
Waiting time = 32,768 states
Waiting time = 65,536 states
Waiting time = 131,072 states
Waiting time = 1,024 states
Illegal setting
Description
(Initial value)
(Initial value)
(Initial value)
(Initial value)