UPSD3234A-40U6T STMicroelectronics, UPSD3234A-40U6T Datasheet - Page 88

• Manufacturer Part Number: UPSD3234A-40U6T
• Description: IC MCU 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3234A-40U6T

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, UART/USART, USB
• Peripherals: LVR, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 288KB (288K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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C interface
Table 57.
Table 58.
Table 59.
SFR
Register Value
30MHz (f
20MHz (f
40MHz (f
8MHz (f
S1SETUP,
S2SETUP
Address
8Bh
FFh
00h
80h
81h
82h
System Clock
...
...
D1h
D2h
OSC
OSC
OSC
OSC
Start /Stop Hold Time Detection Register (S1SETUP, S2SETUP)
System clock of 40MHz
System clock setup examples
/2 -> 250ns)
/2 -> 66.6ns)
/2 -> 100ns)
/2 -> 50ns)
S1SETUP
S2SETUP
Register
(f
Name
Sample Clock
OSC
Number of
128EA
/2 -> 50ns)
12EA
1EA
1EA
2EA
3EA
...
...
Register Value
S1SETUP,
Reset
S2SETUP
Value
UPSD3234A, UPSD3234BV, UPSD3233B, UPSD3233BV
00h
00h
8Bh
89h
86h
83h
Start/Stop Hold
Required
6000ns
100ns
150ns
600ns
To control the start/stop hold time detection for the
DDC module in Slave mode
To control the start/stop hold time detection for the
multi-master I²C module in Slave mode
Time
50ns
50ns
...
...
Sample Clock
Number of
12 EA
9 EA
6 EA
3 EA
When Bit 7 (enable bit) = 0, the number of
sample clock is 1EA (ignore Bit 6 to Bit 0)
Fast mode I²C Start/Stop hold time
specification
Note
Required Start/Stop Hold
Note
600ns
750ns
600ns
600ns
Time