ST6246 STMICROELECTRONICS [STMicroelectronics], ST6246 Datasheet - Page 42
ST6246
Manufacturer Part Number
ST6246
Description
8-BIT OTP/EPROM MCU WITH LCD DRIVER, EEPROM AND A/D CONVERTER
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST6246.pdf
(72 pages)
- Current page: 42 of 72
- Download datasheet (453Kb)
ST62T46B/E46B
TIMER 1& 2 (Cont’d)
4.2.4 TIMER 1 Registers
Timer Status Control Register (TSCR)
Address: 0D4h — Read/Write
Bit 7 = TMZ: Timer Zero bit
A low-to-high transition indicates that the timer
count register has decrement to zero. This bit
must be cleared by user software before starting a
new count.
Bit 6 = ETI: Enable Timer Interrup
When set, enables the timer interrupt request. If
ETI=0 the timer interrupt is disabled. If ETI=1 and
TMZ=1 an interrupt request is generated.
Bit 5 = Reserved. Must be set to 1.
Bit 4 = Do not care
Data sent to the timer output when TMZ is set high
(output mode only). Input mode selection (input
mode only)
Bit 3 = PSI: Prescaler Initialize Bit
Used to initialize the prescaler and inhibit its count-
ing. When PSI=“0” the prescaler is set to 7Fh and
the counter is inhibited. When PSI=“1” the prescal-
er is enabled to count downwards. As long as
PSI=“0” both counter and prescaler are not run-
ning.
Bit 2, 1, 0 = PS2, PS1, PS0: Prescaler Mux. Se-
lect. These bits select the division ratio of the pres-
caler register.
42/72
378
TMZ
7
ETI
-
-
PSI
PS2
PS1
PS0
0
Table 13. Prescaler Division Factors
Timer Counter Register (TCR)
Address: 0D3h — Read/Write
Bit 7-0 = D7-D0: Counter Bits.
Prescaler Register PSC
Address: 0D2h — Read/Write
Bit 7 = D7: Always read as ”0”.
Bit 6-0 = D6-D0 : Prescaler Bits.
D7
D7
7
7
PS2
0
0
0
0
1
1
1
1
D6
D6
D5
D5
PS1
1
0
0
1
1
0
0
1
D4
D4
D3
D3
PS0
1
0
1
0
1
0
1
0
D2
D2
Divided by
D1
D1
128
16
32
64
8
1
2
4
D0
D0
0
0
Related parts for ST6246
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
(ST62T15C / ST62T25C) 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
(ST62E35B / ST62T35B) 8-BIT OTP/EPROM MCUs
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
8-BIT OTP/EPROM MCU WITH LCD DRIVER / EEPROM AND A/D CONVERTER
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
AUdio Amplifier
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
NPN MEDIUM POWER TRANSISTOR
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
(ST90135 / ST90158) Microcontroller
Manufacturer:
ST Microelectronics
Part Number:
Description:
(ST90x27 / ST90x28) 16K EPROM HCMOS MCUS WITH RAM
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
(ST90R28B6) 16K ROM / 256 RAM HCMOS MCUs
Manufacturer:
ST Microelectronics
Part Number:
Description:
(ST90x31) 8K EPROM HCMOS MCU
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
(ST92195C/D) 48-96 Kbyte ROM HCMOS MCU
Manufacturer:
ST Microelectronics
Part Number:
Description:
16-48K ROM HCMOS MCU WITH ON SCREEN DISPLAY AND VOLTAGE TUNINGOUTPUT
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
48K ROM HCMOS MCUs WITH ON SCREEN DISPLAY AND A/D CONVERTER
Manufacturer:
ST Microelectronics
Datasheet:
Part Number:
Description:
24K ROM HCMOS MCU WITH ON SCREEN DISPLAY AND CLOSED-CAPTION DATA SLICER
Manufacturer:
ST Microelectronics
Datasheet: