UPSD3422E-40U6 STMicroelectronics, UPSD3422E-40U6 Datasheet - Page 135

• Manufacturer Part Number: UPSD3422E-40U6
• Description: MCU 8BIT 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3422E-40U6

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 80KB (80K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• For Use With: 497-5577 - BOARD EVAL USB POWER SWITCH497-5518 - EVAL BOARD RFID READER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-4903

UPSD3422, UPSD3433, UPSD3434, UPSD3454
23.13
Table 88.
1. Not compatible with High Speed I
I
The following pseudo-code explains hardware control for these I
UPSD34xx:
●
●
●
●
●
●
Full C code drivers for the UPSD34xx I
the web at www.st.com\psm.
Initialization after a UPSD34xx reset
Ensure pins P3.6 and P3.7 are GPIO inputs
Configure pins P3.6 and P3.7 as I2C
Set I2C clock prescaler to determine fSCL
Set bus Start condition sampling
speed, f
2
C operating sequences
I
2
C bus
High
Fast
Initialize the Interface
Function as Master-Transmitter
Function as Master-Receiver
Function as Slave-Transmitter
Function as Slave-Receiver
Interrupt Service Routine
–
–
–
–
SCL
SFR P3.7 = 1 and SFR P3.6 = 1
SFR P3SFS.6 = 1 and P3SFS.7 = 1
SFR S1CON.CR[2:0] = desired SCL freq.
SFR S1SETUP[7:0] = number of samples
S1SETUP examples for various I
frequencies (continued)
Recommended
S1SETUP value
Number of samples
Time between samples
Total sampled period
Recommended
S1SETUP value
Number of samples
Time between samples
Total sampled period
Parameter
2
C.
166.6 ns
500 ns
6 MHz
2
82h
(1)
C interface, and other interfaces are available from
3
-
-
-
2
12 MHz
C bus speeds and oscillator
83.3 ns
83.3 ns
500 ns
83.3
85h
Oscillator frequency, f
80
6
1
24 MHz
41.6 ns
41.6 ns
500 ns
125 ns
8Bh
12
82
3
2
C functions on the
33 MHz
510 ns
120 ns
30 ns
30 ns
OSC
90h
17
83
4
I
2
C interface
40 MHz
500 ns
125 ns
25 ns
25 ns
93h
135/300
20
84
5