ST7LITE20F2 STMicroelectronics, ST7LITE20F2 Datasheet - Page 7

• Manufacturer Part Number: ST7LITE20F2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7LITE20F2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55˚C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

PIN DESCRIPTION (Cont’d)
Legend / Abbreviations for
Type:
In/Output level: C
Output level:
Port and control configuration:
The RESET configuration of each pin is shown in bold which is valid as long as the device is in reset state.
Table 1. Device Pin Description
– Input:
– Output:
Pin No.
10
11
1
2
3
4
5
6
7
8
9
16 V
17 V
18 RESET
19 PB0/AIN0/SS
20 PB1/AIN1/SCK
1
2
3
4
5
6
PB2/AIN2/MISO
PB3/AIN3/MOSI
PB4/AIN4/CLKIN I/O
PB5/AIN5
PB6/AIN6
PA7
SS
DD
Pin Name
I = input, O = output, S = supply
HS = 20mA high sink (on N-buffer only)
float = floating, wpu = weak pull-up, int = interrupt, ana = analog
OD = open drain, PP = push-pull
T
= CMOS 0.3V
I/O C
I/O
I/O
I/O
I/O
I/O
I/O
I/O C
S
S
Table
Level
T
T
DD
C
C
C
C
C
C
C
T
T
T
T
T
T
T
1:
HS
/0.7V
X
X
X
X
X
X
X
X
DD
with input trigger
X
Port / Control
Input
ei3
ei2
ei1
X
X
X
X
X
X
X
Output
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
(after reset)
Ground
Main power supply
Top priority non maskable interrupt (active
low)
Port B0
Port B1
Port B2
Port B3
Port B4
Port B5
Port B6
Port A7
Function
Main
ADC Analog Input 0 or SPI
Slave Select (active low)
Caution: No negative current
injection allowed on this pin.
For details, refer to
13.2.2 on page 92
ADC Analog Input 1 or SPI Se-
rial Clock
Caution: No negative current
injection allowed on this pin.
For details, refer to
13.2.2 on page 92
ADC Analog Input 2 or SPI
Master In/ Slave Out Data
ADC Analog Input 3 or SPI
Master Out / Slave In Data
ADC Analog Input 4 or Exter-
nal clock input
ADC Analog Input 5
ADC Analog Input 6
Alternate Function
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