MC908GR4CDWE Freescale Semiconductor, MC908GR4CDWE Datasheet - Page 162

• Manufacturer Part Number: MC908GR4CDWE
• Description: IC MCU 4K FLASH 8MHZ 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908GR4CDWE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 17
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: HC08
• No. Of I/o's: 21
• Ram Memory Size: 384Byte
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Embedded Interface Type: I2C, SCI, SPI
• Rohs Compliant: Yes
• Processor Series: HC08GR
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 384 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8.2 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 6 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Flash Memory
11.7 FLASH Program/Read Operation
Technical Data
162
Programming of the FLASH memory is done on a row basis. A row
consists of 32 consecutive bytes starting from addresses $XX00,
$XX20, $XX40, $XX60, $XX80, $XXA0, $XXC0, and $XXE0. Use this
step-by-step procedure to program a row of FLASH memory
2
* The time between each FLASH address change, or the time between the last FLASH address
programmed to clearing PGM bit, must not exceed the maximum programming time, t
This program sequence is repeated throughout the memory until all data
is programmed.
10. Clear the PGM bit.*
11. Wait for a time, t
12. Clear the HVEN bit.
13. After time, t
is a flowchart representation):
1. Set the PGM bit. This configures the memory for program
2. Read from the FLASH block protect register.
3. Write any data to any FLASH address within the row address
4. Wait for a time, t
5. Set the HVEN bit.
6. Wait for a time, t
7. Write data to the FLASH address to be programmed.*
8. Wait for a time, t
9. Repeat step 7 and 8 until all the bytes within the row are
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For More Information On This Product,
operation and enables the latching of address and data for
programming.
range desired.
programmed.
mode again.
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rcv
Flash Memory
(min. 1 s), the memory can be accessed in read
nvs
pgs
PROG
nvh
(min. 10 s).
(min. 5 s).
(min. 5 s).
(min. 30 s).
MC68HC908GR8 — Rev 4.0
(Figure 11-
MOTOROLA
PROG
max.