C8051F321-GM Silicon Laboratories Inc, C8051F321-GM Datasheet - Page 110

• Manufacturer Part Number: C8051F321-GM
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321-GM

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2.25 KB
• Interface Type: I2C/SMBus/SPI/UART/USB
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F320DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 13-ch x 10-bit or 17-ch x 10-bit
• No. Of I/o's: 21
• Ram Memory Size: 1280Byte
• Cpu Speed: 25MHz
• No. Of Timers: 4
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1480 - DAUGHTER CARD TOOLSTCK C8051F321770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1261

C8051F320/1
110
Bits7-3:
Bit2:
Bit1:
Bit0:
R/W
Bit7
-
other FLASH pages
FLASH security lock
Locked when any
Unused: Read = 00000b. Write = don’t care.
Reserved. Read = 0b. Must Write = 0b.
PSEE: Program Store Erase Enable
Setting this bit (in combination with PSWE) allows an entire page of FLASH program memory to be
erased. If this bit is logic 1 and FLASH writes are enabled (PSWE is logic 1), a write to FLASH
memory using the MOVX instruction will erase the entire page that contains the location addressed
by the MOVX instruction. The value of the data byte written does not matter.
0: FLASH program memory erasure disabled.
1: FLASH program memory erasure enabled.
PSWE: Program Store Write Enable
Setting this bit allows writing a byte of data to the FLASH program memory using the MOVX write
instruction. The FLASH location should be erased before writing data.
0: Writes to FLASH program memory disabled.
1: Writes to FLASH program memory enabled; the MOVX write instruction targets FLASH memory.
according to the
Access limit set
are locked
Figure 11.1. FLASH Program Memory Map and Security Byte
R/W
Bit6
byte
-
Figure 11.2. PSCTL: Program Store R/W Control
R/W
Bit5
-
Unlocked FLASH Pages
R/W
Bit4
-
C8051F320/1
Lock Byte
Reserved
Rev. 1.1
R/W
Bit3
-
Reserved
R/W
Bit2
0x3E00
0x3DFF
0x3DFE
0x3C00
0x0000
PSEE
R/W
Bit1
organized in 512-byte
FLASH memory
pages
PSWE
R/W
Bit0
SFR Address:
00000000
Reset Value
0x8F