C8051F364-GQ Silicon Laboratories Inc, C8051F364-GQ Datasheet - Page 143
C8051F364-GQ
Manufacturer Part Number
C8051F364-GQ
Description
IC 8051 MCU 32K FLASH 32-LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F36xr
Specifications of C8051F364-GQ
Program Memory Type
FLASH
Program Memory Size
32KB (32K x 8)
Package / Case
32-LQFP
Core Processor
8051
Core Size
8-Bit
Speed
100MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
29
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
I2C/SMBus/SPI/UART
Maximum Clock Frequency
100 MHz
Number Of Programmable I/os
29
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F360DK
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1410 - KIT DEV FOR C8051F360 FAMILY
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1646
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13.4. Flash Read Timing
On reset, the C8051F36x Flash read timing is configured for operation with system clocks up to 25 MHz. If
the system clock will not be increased above 25 MHz, then the Flash timing registers may be left at their
reset value.
For every Flash read or fetch, the system provides an internal Flash read strobe to the Flash memory. The
Flash read strobe lasts for one or two system clock cycles, based on the FLRT bits (FLSCL.4 and
FLSCL.5). If the system clock is greater than 25 MHz, the FLRT bit must be changed to the appropri-
ate setting. Otherwise, data read or fetched from Flash may not represent the actual contents of Flash.
When the Flash read strobe is asserted, Flash memory is active. When it is de-asserted, Flash memory is
in a low power state.
The recommended procedure for updating FLRT is:
Bits 7–6: UNUSED. Read = 00b. Write = don’t care.
Bits 5–4: FLRT: Flash Read Time.
Bits 3–0: RESERVED. Read = 0000b. Must Write 0000b.
Important Note: When changing the FLRT bits to a lower setting (e.g. when changing from a
SFR Page:
SFR Address:
R/W
Bit7
–
Step 1. Select SYSCLK to 25 MHz or less.
Step 2. Disable the prefetch engine (CHPFEN = ‘0’ in CCH0CN register).
Step 3. Set the FLRT bits to the appropriate setting for the SYSCLK.
Step 4. Enable the prefetch engine (CHPFEN = ‘1’ in CCH0CN register).
These bits should be programmed to the smallest allowed value, according to the system
clock speed.
00: SYSCLK < 25 MHz.
01: SYSCLK < 50 MHz.
10: SYSCLK < 75 MHz.
11: SYSCLK < 100 MHz.
value of 11b to 00b), cache reads, cache writes, and the prefetch engine should be
disabled using the CCH0CN register (see SFR Definition 14.1).
0
0xB6
R/W
Bit6
–
SFR Definition 13.3.
R/W
Bit5
FLRT
R/W
Bit4
FLSCL: Flash Memory Control
Reserved Reserved Reserved Reserved 00000000
C8051F360/1/2/3/4/5/6/7/8/9
Rev. 1.0
R/W
Bit3
R/W
Bit2
R/W
Bit1
R/W
Bit0
Reset Value
143
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