DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 83
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
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4.4
The CPG has the following registers.
For details on the addresses of these registers and the states of these registers in each processing
state, see section 20, List of Registers
Table 4.5
4.4.1
FRQCR is a 16-bit readable/writable register that specifies the frequency division ratios for the
internal clock (Iφ), bus clock (Bφ), peripheral clock (Pφ), and MTU2 clock (MPφ). FRQCR can be
accessed only in words.
FRQCR is initialized to H'36DB only by a power-on reset (except a power-on reset due to a WDT
overflow).
Before making changes to FRQCR, stop clock supply to each module except the CPU, on-chip
ROM, and on-chip-RAM.
Initial value:
Register Name
Frequency control register
Oscillation stop detection
control register
R/W:
Bit:
Register Descriptions
Frequency Control Register (FRQCR)
15
R
0
-
Register Configuration
R/W
14
0
IFC[2:0]
R/W
13
1
R/W
12
1
R/W
Abbrevia-
tion
FRQCR
OSCCR
11
0
BFC[2:0]
R/W
10
1
R/W
9
1
R/W
R/W
R/W
R/W
8
0
PFC[2:0]
Initial Value
H'36DB
H'00
R/W
7
1
R/W
6
1
Rev. 5.00 Mar. 06, 2009 Page 63 of 770
R/W
5
0
-
Address
H'FFFFE800
H'FFFFE814
R/W
4
1
-
R/W
3
1
-
REJ09B0243-0500
R/W
2
0
Access Size
16
8
MPFC[2:0]
R/W
1
1
R/W
0
1
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