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R2F+LCD MCU. TTU712 Datasheet |
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Preliminary
TTR712/ TTU712
R2F+LCD MCU
2005/11/21
Page：1--33
Ver.：0.2
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Preliminary
TTR712/ TTU712
. General Description:................................................. 3
. Features: ........................................................... 3
. Application: ........................................................ 3
. Pin Assignment ...................................................... 4
. Pin Description (TTU711)............................................. 5
. Pin Description (TTU712/ TTR712)..................................... 6
. AC / DC Characteristics.............................................. 7
1 Absolutely max. ratings .................................................................................................................7
2 D.C. Characteristics .......................................................................................................................7
3 A.C. Characteristics .......................................................................................................................8
. Block Diagram ....................................................... 9
. Function Description................................................ 10
1 Map of memory and I/Os.............................................................................................................10
2 CONTROL REGISTER TABLE .................................................................................................12
3 SYSTEM CONTROL REGISTER..............................................................................................13
4 Low voltage detector ...................................................................................................................14
5 SYSTEM CLOCK CONTROL REGISTER ...............................................................................14
6 LCD CONTROL REGISTER .....................................................................................................16
7 I/O REGISTER............................................................................................................................16
A. Port A ...................................................................................................................................16
B. Port B ...................................................................................................................................17
C. Port C/D（TTU712/ TTR712）..........................................................................................19
8 RFC/TMR circuit.........................................................................................................................20
9 TIMER BASE CONTROL REGISTER......................................................................................23
10 WDT CONTROL REGISTER ....................................................................................................23
11 EL timing .....................................................................................................................................24
12 LCD RAM ...................................................................................................................................25
13 LCD PATTERN ...........................................................................................................................27
A. 1/4 duty, 1/2 bias..................................................................................................................27
B. 1/3 duty, 1/2 bias..................................................................................................................28
. Application Circuit................................................. 29
. Mask Option Table................................................... 31
. Application Note.................................................... 32
. Order Information................................................... 32
. Package Information................................................. 33
. Revise History ..................................................... 33
2005/11/21
Page：2--33
Ver.：0.2
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Preliminary
TTR712/ TTU712
. General Description:
The MCU provides high cost-performance for thermometer application. It designs by LSI high
technology with low power CMOS process.
. Features:
Use 4 bits microprocessor core
Operating Voltage:
- (TTU711/ TTU712) 2.2v-5.5v
- (TTR712) 2.4v-5.5v
Low speed oscillator:
--- 32768Hz Crystal oscillator（內建電容，有快速起振功能，當讀 PS resister 後，
切換為正常 mode）
----RC oscillator(from 32/64/128/256Khz，外掛電阻)(MASK OPTION) ,
High speed system oscillator:
- Built-in internal RC oscillator ( ~ 4MHz)
- external adjustable type RC oscillator (150K~ 4MHz)
- 400KHz ~ 8MHz resonator/crystal oscillator
R2F Oscillator
- 10Khz-100Khz RC oscillator
User ROM (TTU711)1K*16, RAM 64*4，(TTU712/TTR712) 4K*16, RAM 128*4
Built-in (TTU711) 2 stacks， (TTU712/ TTR712)4 stacks
Built-in 12-bit programmable timer with internal overflow interrupt
Built-in 12-bit counter for R2F circuit
Built-in watch dog timer
Built-in time base timer
Built-in EL control timing
Built-in Buzzer output (2Khz/4Khz/5.3Khz) from low speed clock
Built-in low battery detect function (LVD with enable ctrl)
Provide （TTU711）4 I/O ports, 4 input ports, （TTU712/ TTR712) 10 I/O ports, 4 input
ports
LCD （TTU711）4COM/14SEG，or 3COM/15SEG，1/2 bias（TTU712/ TTR712)
4COM/31SEG or 3COM/32SEG, 1/4 duty（frame frequency is 64Hz）, 1/3 duty（frame
frequency is 86Hz）, 1/3 bias for R-type bias, 1/2 bias for C-type bias selected by mask
option
Provide internal/external reset function
Provide 64 pin QFP package (TTR712)
. Application:
z （TTU711）快速體溫計（4 秒）
z （TTU711）室內外溫度計
z （TTU711）室內溫度計 + CLOCK
z （TTU712/ TTR712)室內外溫度計 + 濕度計 + CLOCK
2005/11/21
Page：3--33
Ver.：0.2
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