DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 532

• 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
14.5.1
The CMT operation can be disabled or enabled using the standby control register. The initial
setting is for CMT operation to be halted. Access to a register is enabled by clearing module
standby mode. For details, refer to section 19, Power-Down Modes.
14.5.2
When the compare match signal is generated in the T2 cycle while writing to CMCNT, clearing
CMCNT has priority over writing to it. In this case, CMCNT is not written to. Figure 14.5 shows
the timing to clear the CMCNT counter.
Rev. 5.00 Mar. 06, 2009 Page 512 of 770
REJ09B0243-0500
Figure 14.5 Conflict between Write and Compare-Match Processes of CMCNT
Usage Notes
Module Standby Mode Setting
Conflict between Write and Compare-Match Processes of CMCNT
Peripheral operating
Counter clear
Internal write
clock (Pφ)
Address
CMCNT
CMCSR write cycle
N
T1
CMCNT
T2
H'0000