DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 412

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Contention between TCNT Write and Clear Operations:
If the counter clear signal is generated in the T2 state of a TCNT write cycle, TCNT clearing takes
priority and the TCNT write is not performed. Figure 12.47 shows the timing in this case.
Contention between TCNT Write and Increment Operations:
If incrementing occurs in the T2 state of a TCNT write cycle, the TCNT write takes priority and
TCNT is not incremented. Figure 12.48 shows the timing in this case.
Rev.2.00 May. 28, 2009 Page 372 of 732
REJ09B0059-0200
Figure 12.48 Contention between TCNT Write and Increment Operations
φ
Address
Write signal
Counter clear
signal
TCNT
φ
Address
Write signal
TCNT input
clock
TCNT
Figure 12.47 Contention between TCNT Write and Clear Operations
TCNT write data
N
TCNT write cycle
N
TCNT write cycle
TCNT address
TCNT address
T
T
1
1
T
T
2
2
H'0000
M