DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 610

• 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: -

17.4.2
The programming/erasing interface registers are as described below. They are all 8-bit registers
that can be accessed in bytes.
(1) Flash Code Control and Status Register (FCCS)
Rev. 5.00 Mar. 06, 2009 Page 590 of 770
REJ09B0243-0500
Bit
7
6, 5
FCCS is configured by bits which request the monitor of the FWE pin state and error
occurrence during programming or erasing flash memory and the download of the on-chip
program.
Bit Name
FWE
⎯
Programming/Erasing Interface Registers
Initial value:
Initial
Value
1/0
All 0
R/W:
Bit:
FWE
1/0
R
7
R/W
R
R
R
6
0
-
Description
Flash Programming Enable
Monitors the level which is input to the FWE pin that
performs hardware protection of the flash memory
programming or erasing. The initial value is 0 or 1
according to the FWE pin state.
0: When the FWE pin goes low (in hardware protection
1: When the FWE pin goes high
Reserved
These bits are always read as 0. The write value should
always be 0.
R
5
0
-
state)
FLER
R
4
0
R
3
0
-
R
2
0
-
R
1
0
-
(R)/W
SCO
0
0