DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 533

• Manufacturer Part Number: DF71251AD50FPV
• Description: MCU RISC FLASH 32K 8K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Tinyr

Specifications of DF71251AD50FPV

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

14.5.3
Even when the count-up occurs in the T2 cycle while writing to CMCNT in words, the writing has
priority over the count-up. In this case, the count-up is not performed. Figure 14.6 shows the
timing to write to CMCNT in words.
Figure 14.6 Conflict between Word-Write and Count-Up Processes of CMCNT
Conflict between Word-Write and Count-Up Processes of CMCNT
Peripheral operating
CMCNT count-up
Internal write
clock (Pφ)
Address
CMCNT
enable
CMCSR write cycle
N
T1
CMCNT
T2
Rev. 5.00 Mar. 06, 2009 Page 513 of 770
M (CMCNT write data)
REJ09B0243-0500