MC9S12XET256CAG Freescale Semiconductor, MC9S12XET256CAG Datasheet - Page 905
MC9S12XET256CAG
Manufacturer Part Number
MC9S12XET256CAG
Description
MCU 16BIT 256K FLASH 144-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.MC9S12XEP768CAL.pdf
(1328 pages)
Specifications of MC9S12XET256CAG
Core Processor
HCS12X
Core Size
16-Bit
Speed
50MHz
Connectivity
CAN, EBI/EMI, I²C, IrDA, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
119
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.72 V ~ 5.5 V
Data Converters
A/D 24x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Processor Series
S12XE
Core
HCS12
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
KIT33812ECUEVME, EVB9S12XEP100, DEMO9S12XEP100
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S12XET256CAG
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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25.3.2.1
The FCLKDIV register is used to control timed events in program and erase algorithms.
All bits in the FCLKDIV register are readable, bits 6–0 are write once and bit 7 is not writable.
Freescale Semiconductor
FDIV[6:0]
FDIVLD
Address
Offset Module Base + 0x0000
Reset
& Name
Field
6–0
7
W
R
FDIVLD
Clock Divider Loaded
0 FCLKDIV register has not been written
1 FCLKDIV register has been written since the last reset
Clock Divider Bits — FDIV[6:0] must be set to effectively divide OSCCLK down to generate an internal Flash
clock, FCLK, with a target frequency of 1 MHz for use by the Flash module to control timed events during program
and erase algorithms.
Please refer to
Flash Clock Divider Register (FCLKDIV)
0
7
The FCLKDIV register should never be written while a Flash command is
executing (CCIF=0). The FCLKDIV register is writable during the Flash
reset sequence even though CCIF is clear.
= Unimplemented or Reserved
7
Section 25.4.1, “Flash Command Operations,”
Figure 25-4. FTM256K2 Register Summary (continued)
0
6
Figure 25-5. Flash Clock Divider Register (FCLKDIV)
= Unimplemented or Reserved
Table 25-9
MC9S12XE-Family Reference Manual , Rev. 1.23
6
Table 25-8. FCLKDIV Field Descriptions
0
5
shows recommended values for FDIV[6:0] based on OSCCLK frequency.
5
CAUTION
0
4
Description
4
FDIV[6:0]
Chapter 25 256 KByte Flash Module (S12XFTM256K2V1)
0
3
for more information.
3
0
2
2
0
1
1
0
0
0
905
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