DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 618

• 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: -

(1) Download Control
Rev. 5.00 Mar. 06, 2009 Page 598 of 770
REJ09B0243-0500
Bit
7 to 3
2
The on-chip program is automatically downloaded by setting the SCO bit to 1. The on-chip
RAM area to be downloaded is the area as much as 3 Kbytes starting from the start address
specified by FTDAR. For the address map of the on-chip RAM, see figure 17.10.
The download control is set by using the programming/erasing interface registers. The return
value is given by the DPFR parameter.
(a) Download pass/fail result parameter (DPFR: one byte of start address of on-chip RAM
specified by FTDAR)
This parameter indicates the return value of the download result. The value of this
parameter can be used to determine if downloading is executed or not. Since the
confirmation whether the SCO bit is set to 1 is difficult, the certain determination must be
performed by setting one byte of the start address of the on-chip RAM area specified by
FTDAR to a value other than the return value of download (for example, H'FF) before the
download start (before setting the SCO bit to 1). For the checking method of download
results, see section 17.5.2 (2), Programming Procedure in User Program Mode.
Bit Name
⎯
SS
Initial value:
Initial
Value
Undefined R/W
Undefined R/W
R/W:
Bit:
R/W
7
-
-
R/W
R/W
6
-
-
Description
Unused
Return 0.
Source Select Error Detect
The on-chip program which can be downloaded can be
specified as only one type. When more than two types
of the program are selected, the program is not
selected, or the program is selected without mapping,
an error occurs.
0: Download program can be selected normally
1: Download error occurs (Multi-selection or program
R/W
5
-
-
which is not mapped is selected)
R/W
4
-
-
R/W
3
-
-
R/W
SS
2
-
R/W
FK
1
-
R/W
SF
0
-