DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 435

• 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: -

Contention between TCNT Write and Clear Operations: If the counter clear signal is generated in the T
TCNT write cycle, TCNT clearing takes precedence and the TCNT write is not performed.
Figure 10-49 shows the timing in this case.
Contention between TCNT Write and Increment Operations: If incrementing occurs in the T
cycle, the TCNT write takes precedence and TCNT is not incremented.
Figure 10-50 shows the timing in this case.
ø
Address
Write signal
Counter clear
signal
TCNT
ø
Address
Write signal
TCNT input
clock
TCNT
Figure 10-50 Contention between TCNT Write and Increment Operations
Figure 10-49 Contention between TCNT Write and Clear Operations
TCNT write data
N
N
TCNT write cycle
TCNT write cycle
TCNT address
TCNT address
T
T
1
1
T
T
2
2
H'0000
M
Rev.6.00 Oct.28.2004 page 405 of 1016
2
state of a TCNT write
REJ09B0138-0600H
2
state of a