HD64F7051SFJ20V Renesas Electronics America, HD64F7051SFJ20V Datasheet - Page 362

• Manufacturer Part Number: HD64F7051SFJ20V
• Description: MCU 5V 256K J-TEMP PB-FREE QFP-1
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7050r

Specifications of HD64F7051SFJ20V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, WDT
• Number Of I /o: 102
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 168-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 10 Advanced Timer Unit (ATU)
Contention between DSTR Bit Setting by CPU and Clearing by Underflow: If underflow
occurs in the T2 state of a down-counter start register (DSTR) “1” write cycle by the CPU,
clearing to 0 by the underflow has priority, and the corresponding bit of DSTR is not set to 1.
The timing in this case is shown in figure 10.64.
Rev. 5.00 Jan 06, 2006 page 340 of 818
REJ09B0273-0500
Figure 10.64 Contention between DSTR Bit Setting by CPU and Clearing by Underflow
Internal write signal
Down-count start
Underflow signal
Address
register
DCNT
CK
0001
STR write cycle
DSTR address
T1
0000
1 written
to DSTR
T2
0000