C8051T322-GQR Silicon Labs, C8051T322-GQR Datasheet - Page 86

• Manufacturer Part Number: C8051T322-GQR
• Description: 8-bit Microcontrollers - MCU USB-OTP-16K-LQFP32
• Manufacturer: Silicon Labs

Specifications of C8051T322-GQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051T620/621/320/321/322/323
Program memory is read-only from within firmware. Individual program memory bytes can be read using
the MOVC instruction. This facilitates the use of byte-programmable EPROM space for constant storage.
15.1.1. Derivative ID
To distinguish between individual derivatives in the C8051T620/621/320/321/322/323 device family, the
Derivative ID is located at address 0x3FF9 in EPROM memory. The Derivative ID for the devices in the
C8051T620/621/320/321/322/323 are as follows:
15.1.2. Temperature Offset Calibration
The C8051T620/621/320/321/322/323 devices include a factory calibrated temperature sensor offset coef-
ficient located in the EPROM memory. The TOFFH and TOFFL values are located at 0x3FFB and 0x3FFA,
respectively. More information on using the temperature sensor calibration values can be found in Section
“9.1. Calibration” on page 56.
15.1.3. Serialization
All C8051T620/621/320/321/322/323 devices have a factory serialization located in EPROM memory. This
value is unique to each device. The serial number is located at addresses 0x3FFC-0x3FFF and can be
accessed like any constant array in program memory.
86
C8051T620
C8051T621
C8051T320
C8051T321
C8051T322
C8051T323
Device
Figure 15.2. Program Memory Map
TOFFH and TOFFL
EPROM Memory
C8051T620/1
Serial Number
Security Byte
Derivative ID
15872 Bytes
Reserved
Rev. 1.1
0x3FFF
0x3FFC
0x3FFB
0x3FFA
0x3FF9
0x3FF8
0x3FF7
0x3E00
0x3DFF
0x0000
Derivative ID
0xD0
0xD3
0xD1
0xD2
0xD4
0xD5