DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 433

• Manufacturer Part Number: DF2357F20
• Description: IC H8S MCU FLASH 5V 128K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2357F20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 128KB (128K 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: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Status Flag Clearing Timing: After a status flag is read as 1 by the CPU, it is cleared by writing 0 to it. When the DTC
or DMAC is activated, the flag is cleared automatically. Figure 10-46 shows the timing for status flag clearing by the
CPU, and figure 10-47 shows the timing for status flag clearing by the DTC or DMAC.
ø
Address
Status flag
Interrupt
request
signal
ø
Address
Write signal
Status flag
Interrupt
request
signal
Figure 10-47 Timing for Status Flag Clearing by DTC/DMAC Activation
Figure 10-46 Timing for Status Flag Clearing by CPU
TSR write cycle
Source address
TSR address
T
DTC/DMAC
T
read cycle
1
1
T
T
2
2
DTC/DMAC
T
write cycle
Destination
1
address
Rev.6.00 Oct.28.2004 page 403 of 1016
T
2
REJ09B0138-0600H