S912XET512J3VALR Freescale Semiconductor, S912XET512J3VALR Datasheet - Page 823

• Manufacturer Part Number: S912XET512J3VALR
• Description: 16-bit Microcontrollers - MCU 16 BIT,512K FLASH
• Manufacturer: Freescale Semiconductor

Specifications of S912XET512J3VALR

• Rohs: yes
• Core: HCS12X
• Processor Series: MC9S12XE
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.13 V to 5.5 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-112
• Mounting Style: SMD/SMT

23.3.2.4
The VREGAPITR register allows to trim the API timeout period.
23.3.2.5
The VREGAPIRH and VREGAPIRL register allows the configuration of the VREG_3V3 autonomous
periodical interrupt rate.
Freescale Semiconductor
0x02F3
APITR[5:0]
1. Reset value is either 0 or preset by factory. See Section 1 (Device Overview) for details.
Reset
Field
Field
APIE
APIF
7–2
1
0
W
R
APITR5
Autonomous Periodical Interrupt Enable Bit
0 API interrupt request is disabled.
1 API interrupt will be requested whenever APIF is set.
Autonomous Periodical Interrupt Flag — APIF is set to 1 when the in the API configured time has elapsed.
This flag can only be cleared by writing a 1 to it. Clearing of the flag has precedence over setting.
Writing a 0 has no effect. If enabled (APIE = 1), APIF causes an interrupt request.
0 API timeout has not yet occurred.
1 API timeout has occurred.
Autonomous Periodical Interrupt Period Trimming Bits — See
Autonomous Periodical Interrupt Trimming Register (VREGAPITR)
0
Autonomous Periodical Interrupt Rate High and Low Register
(VREGAPIRH / VREGAPIRL)
Figure 23-5. Autonomous Periodical Interrupt Trimming Register (VREGAPITR)
7
1
= Unimplemented or Reserved
APITR4
APITR[5]
APITR[4]
APITR[3]
APITR[2]
APITR[1]
APITR[0]
Table 23-5. VREGAPICL Field Descriptions (continued)
0
6
1
Bit
Table 23-6. VREGAPITR Field Descriptions
MC9S12XE-Family Reference Manual Rev. 1.25
Table 23-7. Trimming Effect of APIT
Increases period
Decreases period less than APITR[5] increased it
Decreases period less than APITR[4]
Decreases period less than APITR[3]
Decreases period less than APITR[2]
Decreases period less than APITR[1]
APITR3
0
5
1
APITR2
0
4
1
Trimming Effect
Description
Description
APITR1
0
3
1
Chapter 23 Voltage Regulator (S12VREGL3V3V1)
Table 23-7
APITR0
0
2
1
for trimming effects.
0
0
1
0
0
0
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