DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 216

• 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: -

9.3.6
The TSR registers are 8-bit readable/writable registers that indicate the status of each channel. The
MTU2 has seven TSR registers, two for channel 0 and one each for channels 1 to 5.
• TSR_0, TSR_1, TSR_2, TSR_3, TSR_4
Rev. 5.00 Mar. 06, 2009 Page 196 of 770
REJ09B0243-0500
Bit
7
6
5
Bit Name
TCFD
—
TCFU
Timer Status Register (TSR)
Note:
1.
Initial value:
Writing 0 to this bit after reading it as 1 clears the flag and is the only allowed way.
Initial
Value
1
1
0
R/W:
Bit:
TCFD
R
7
1
R/W
R
R
R/(W)*
R
6
1
-
1
R/(W)*
TCFU
Description
Count Direction Flag
Status flag that shows the direction in which TCNT
counts in channels 1 to 4.
In channel 0, bit 7 is reserved. It is always read as 1
and the write value should always be 1.
0: TCNT counts down
1: TCNT counts up
Reserved
This bit is always read as 1. The write value should
always be 1.
Underflow Flag
Status flag that indicates that TCNT underflow has
occurred when channels 1 and 2 are set to phase
counting mode. Only 0 can be written, for flag clearing.
In channels 0, 3, and 4, bit 5 is reserved. It is always
read as 0 and the write value should always be 0.
[Setting condition]
•
[Clearing condition]
•
5
0
When the TCNT value underflows (changes from
H'0000 to H'FFFF)
When 0 is written to TCFU after reading TCFU = 1*
1
R/(W)*
TCFV
4
0
1
R/(W)*
TGFD
3
0
1
R/(W)*
TGFC
2
0
1
R/(W)*
TGFB
1
0
1
R/(W)*
TGFA
0
0
1
2