MC9S08AC60CFDE Freescale Semiconductor, MC9S08AC60CFDE Datasheet - Page 50

• Manufacturer Part Number: MC9S08AC60CFDE
• Description: IC MCU 8BIT 60K FLASH 48-QFN
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08AC60CFDE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 38
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QFN
• Processor Series: S08AC
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 56
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: DEMO9S08AC60E, DEMOACEX, DEMOACKIT, DCF51AC256, DC9S08AC128, DC9S08AC16, DC9S08AC60, DEMO51AC256KIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Controller Family/series: HCS08
• No. Of I/o's: 38
• Ram Memory Size: 2KB
• Cpu Speed: 40MHz
• No. Of Timers: 3
• Rohs Compliant: Yes
• Height: 1 mm
• Length: 7 mm
• Supply Voltage (max): 5.5 V, 5.5 V
• Supply Voltage (min): 2.7 V, 2.7 V
• Width: 7 mm
• For Use With: DEMO9S08AC60E - BOARD DEMO FOR MC9S08A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

$FFB0 –
$FFB7
$FFB8 –
$FFBB
$FFBC
$FFBD
$FFBE
$FFBF
Chapter 4 Memory
Provided the key enable (KEYEN) bit is 1, the 8-byte comparison key can be used to temporarily
disengage memory security. This key mechanism can be accessed only through user code running in secure
memory. (A security key cannot be entered directly through background debug commands.) This security
key can be disabled completely by programming the KEYEN bit to 0. If the security key is disabled, the
only way to disengage security is by mass erasing the FLASH if needed (normally through the background
debug interface) and verifying that FLASH is blank. To avoid returning to secure mode after the next reset,
program the security bits (SEC01:SEC00) to the unsecured state (1:0).
4.3
The MC9S08AC60 Series includes static RAM. The locations in RAM below 0x0100 can be accessed
using the more efficient direct addressing mode, and any single bit in this area can be accessed with the bit
manipulation instructions (BCLR, BSET, BRCLR, and BRSET). Locating the most frequently accessed
program variables in this area of RAM is preferred.
The RAM retains data when the MCU is in low-power wait, stop2, or stop3 mode. At power-on, the
contents of RAM are uninitialized. RAM data is unaffected by any reset provided that the supply voltage
does not drop below the minimum value for RAM retention.
For compatibility with older M68HC05 MCUs, the HCS08 resets the stack pointer to 0x00FF. In the
MC9S08AC60 Series, it is usually best to re-initialize the stack pointer to the top of the RAM so the direct
page RAM can be used for frequently accessed RAM variables and bit-addressable program variables.
Include the following 2-instruction sequence in your reset initialization routine (where RamLast is equated
to the highest address of the RAM in the Freescale-provided equate file).
50
Address
NVBACKKEY
Reserved
Reserved for stor-
age of 250 kHz
ICGTRM value
NVPROT
Reserved for stor-
age of 243 kHz
ICGTRM value
NVOPT
RAM
Register Name
LDHX
TXS
#RamLast+1
KEYEN
FPS7
Bit 7
—
—
—
Table 4-4. Nonvolatile Register Summary
MC9S08AC60 Series Data Sheet, Rev. 2
FNORED
FPS6
—
—
—
6
;point one past RAM
;SP<-(H:X-1)
FPS5
—
—
—
5
0
8-Byte Comparison Key
FPS4
—
—
—
4
0
FPS3
—
—
—
3
0
FPS2
—
—
—
2
0
Freescale Semiconductor
SEC01
FPS1
—
—
—
1
SEC00
FPDIS
Bit 0
—
—
—