DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 619
DF71251AD50FPV
Manufacturer Part Number
DF71251AD50FPV
Description
MCU RISC FLASH 32K 8K 64LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH Tinyr
Datasheet
1.DF71243N50FPV.pdf
(794 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF71251AD50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 619 of 794
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(2) Programming/Erasing Initialization
(2.1) Flash programming/erasing frequency parameter (FPEFEQ: general register R4 of CPU)
Initial value:
Initial value:
Bit
1
0
The on-chip programming/erasing program to be downloaded includes the initialization
program.
The specified period pulse must be applied when programming or erasing. The specified pulse
width is made by the method in which wait loop is configured by the CPU instruction. The
operating frequency of the CPU must be set. Since the user branch function is supported, the
user branch destination address must be set.
The initial program is set as a parameter of the programming/erasing program which has
downloaded these settings.
This parameter sets the operating frequency of the CPU.
For the range of the operating frequency of this LSI, see section 21.3.1, Clock Timing.
R/W:
R/W:
Bit:
Bit:
Bit Name
FK
SF
R/W
R/W
F15
31
15
-
-
-
R/W
R/W
F14
30
14
-
-
-
R/W
R/W
F13
Initial
Value
Undefined R/W
Undefined R/W
29
13
-
-
-
R/W
R/W
F12
28
12
-
-
-
R/W
R/W
F11
27
11
-
-
-
R/W
R/W
R/W
F10
26
10
-
-
-
Description
Flash Key Register Error Detect
Returns the check result whether the value of FKEY is
set to H'A5.
0: FKEY setting is normal (FKEY = H'A5)
1: FKEY setting is abnormal (FKEY = value other than
Success/Fail
Returns the result whether download has ended
normally or not.
0: Downloading on-chip program has ended normally
1: Downloading on-chip program has ended abnormally
R/W
R/W
25
F9
9
-
-
-
(no error)
H'A5)
(error occurs)
R/W
R/W
24
F8
8
-
-
-
R/W
R/W
23
F7
7
-
-
-
R/W
R/W
22
F6
Rev. 5.00 Mar. 06, 2009 Page 599 of 770
6
-
-
-
R/W
R/W
21
F5
5
-
-
-
R/W
R/W
20
F4
4
-
-
-
R/W
R/W
19
F3
3
-
-
-
REJ09B0243-0500
R/W
R/W
18
F2
2
-
-
-
R/W
R/W
17
F1
1
-
-
-
R/W
R/W
16
F0
0
-
-
-
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