DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 528

• 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: -

Notes: 1. Writing 0 to this bit after reading it as 1 clears the flag and is the only allowed way.
Rev. 5.00 Mar. 06, 2009 Page 508 of 770
REJ09B0243-0500
Bit
15 to 8
7
6
5 to 2
1, 0
2. If another flag setting condition occurs before writing 0 to the bit after reading it as 1, the
Bit Name
⎯
CMF
CMIE
⎯
CKS[1:0]
flag will not be cleared by simply writing 0 to it. In this case, read the bit as 1 once again
and write 0 to it.
Initial
value
All 0
0
0
All 0
00
R/W
R
R/(W)*
R/W
R
R/W
1
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Compare Match Flag
Indicates whether or not the values of CMCNT and
CMCOR match.
0: CMCNT and CMCOR values do not match
[Clearing condition]
•
[Setting condition]
1: CMCNT and CMCOR values match
Compare Match Interrupt Enable
Enables or disables compare match interrupt (CMI)
generation when CMCNT and CMCOR values match
(CMF=1).
0: Compare match interrupt (CMI) disabled
1: Compare match interrupt (CMI) enabled
Reserved
These bits are always read as 0. The write value should
always be 0.
Clock Select 1 and 0
Select the clock to be input to CMCNT from four internal
clocks obtained by dividing the peripheral operating
clock (Pφ). When the STR bit in CMSTR is set to 1,
CMCNT starts counting on the clock selected with bits
CKS1 and CKS0.
00: Pφ/8
01: Pφ/32
10: Pφ/128
11: Pφ/512
When 0 is written to this bit after reading CMF = 1*
2