ST7LITEU09 STMicroelectronics, ST7LITEU09 Datasheet - Page 64

• Manufacturer Part Number: ST7LITEU09
• Description: ST7ULTRALITE - 8-BIT MCU WITH 2K SINGLE VOLTAGE FLASH MEMORY, ADC, TIMERS
• Manufacturer: STMicroelectronics

Specifications of ST7LITEU09

• 2k Bytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C
• 128 Bytes Data Eeprom. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C
• Clock Sources: internal trimmable 8MHz RC oscillator, internal low power, low frequency RC oscillator or external clock
• Five Power Saving Modes: Halt, Auto Wake Up from Halt, Active-Halt, Wait and Slow
• One 8-bit Lite Timer (lt) With Prescaler Including: watchdog, 1 realtime base and 1 input capture

I/O ports
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Figure 32. I/O port general block diagram
Table 20.
1. Off means implemented not activated, On means implemented and activated.
Input
Output
REGISTER
ACCESS
SOURCE (ei
EXTERNAL
INTERRUPT
Configuration mode
Floating with/without interrupt
Pull-up with/without interrupt
Push-pull
Open drain (logic level)
DDR SEL
OR SEL
DR SEL
I/O port mode options
DDR
DR
OR
x
)
POLARITY
SELECTION
ALTERNATE
OUTPUT
ALTERNATE
ENABLE
If implemented
1
0
FROM
OTHER
BITS
(1)
1
0
Pull-up
Off
On
Off
N-BUFFER
PULL-UP
CONDITION
P-buffer
Off
On
Off
SCHMITT
TRIGGER
CMOS
V
DD
ST7LITEU05 ST7LITEU09
to V
P-BUFFER
(see table below)
On
V
DD
DD
DIODES
(see table below)
PULL-UP
(see table below)
Diodes
ALTERNATE
ANALOG
INPUT
INPUT
PAD
to V
On
SS