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MSM66591/ML66592 User's Manual
Chapter 3 CPU Architecture
PSWL
PSWH
PSW
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
CY
ZF HC DD
S
F2
OV MIE MAB F1
BCB
F0
SCB
1
0
2
1
0
Figure 3-6 Configuration of PSW
3.2.2 Control Register
Control registers are a group of registers that have dedicated functions, such as
functions for program status, program sequence, local registers, and stack control.
Control registers consist of four 16-bit registers.
[1]
Program Status Word (PSW)
PSW is a 16-bit register that consists of
• flags to be referred to when executing an instruction (DD)
• flags that are set to "1" or "0" depending on the result of an executing instruction (CY,
ZF, HC, S, OV)
• flags to specify the pointing register set (SCB0–2)
• flags to specify enable ("1") or disable ("0") of an entire maskable interrupt (MIE)
• flags that the user can freely use (F0–2)
• flags available for future expansion of CPU core functions. The user can freely use
these flags in MSM66591/ML66592. (BCB0, 1, MAB)
PSW can be divided into PSWH (bits 8–15) and PSWL (bits 7–0) in 8-bit units, and can
perform 8-bit unit operations as well as 16-bit unit operations depending on the instruc-
tion.
Figure 3-6 shows the configuration of PSW.
High-order 8 bits (PSWH) of PSW include:
• flags to be referred to when executing an instruction (DD)
• flags that are set to "1" or "0" depending on the result of an executing instruction (CY,
ZF, HC, DD, S, OV)
This means that if the following instructions are executed to PSW or PSWH, the
operation may be different from the original operation of the flags.
A. PSW or PSWH content load instruction to ACC
(ZF becomes undefined)
B. Bit operation instruction to ZF (ZF becomes undefined)
Содержание ML66592
Страница 1: ...MSM66591 ML66592 User s Manual CMOS 16 bit microcontroller FEUL66591 66592 01 Issue Date Mar 4 2002 ...
Страница 15: ...Contents 12 ...
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Страница 18: ...Overview Chapter 1 1 ...
Страница 19: ......
Страница 30: ...Description of Pins Chapter 2 2 ...
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Страница 44: ...CPU Architecture Chapter 3 3 ...
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Страница 101: ...3 56 MSM66591 ML66592User sManual Chapter 3 CPU Architecture ...
Страница 102: ...CPU Control Functions Chapter 4 4 ...
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Страница 111: ...4 8 MSM66591 ML66592User sManual Chapter 4 CPU Control Functions ...
Страница 112: ...Memory Control Functions Chapter 5 5 ...
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Страница 117: ...5 4 MSM66591 ML66592User sManual Chapter 5 Memory Control Functions ...
Страница 118: ...Port Functions Chapter 6 6 ...
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Страница 152: ...Output Pin Control Pin OE Chapter 7 7 ...
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Страница 155: ...7 2 MSM66591 ML66592User sManual Chapter 7 Output Pin Control Pin OE ...
Страница 156: ...Clock Generation Circuit Chapter 8 8 ...
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Страница 160: ...Time Base Counter TBC Chapter 9 9 ...
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Страница 164: ...Watchdog Timer WDT Chapter 10 10 ...
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Страница 170: ...Flexible Timer FTM Chapter 11 11 11 ...
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Страница 213: ...11 42 MSM66591 ML66592User sManual Chapter 11 Flexible Timer FTM ...
Страница 214: ...General Purpose 8 Bit Timer Function Chapter 12 12 ...
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Страница 223: ...12 8 MSM66591 ML66592User sManual Chapter 12 General Purpose 8 Bit Timer Function ...
Страница 224: ...PWM Functions Chapter 13 13 ...
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Страница 244: ...Baud Rate Generator Functions Chapter 14 14 ...
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Страница 263: ...14 18 MSM66591 ML66592User sManual Chapter 14 Baud Rate Generator Functions ...
Страница 264: ...Serial Port Functions Chapter 15 15 ...
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Страница 348: ...A D Converter Functions Chapter 16 16 ...
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Страница 381: ...16 32 MSM66591 ML66592User sManual Chapter 16 A D Converter Functions ...
Страница 382: ...Transition Detector Functions Chapter 17 17 ...
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Страница 387: ...17 4 MSM66591 ML66592User sManual Chapter 17 Transition Detector Functions ...
Страница 388: ...Peripheral Functions Chapter 18 18 ...
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Страница 392: ...External Interrupt Request Function Chapter 19 19 ...
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Страница 396: ...Interrupt Request Processing Function Chapter 20 20 ...
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Страница 407: ...20 10 MSM66591 ML66592User sManual Chapter 20 Interrupt Request Processing Function ...
Страница 408: ...Bus Port Functions Chapter 21 21 ...
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Страница 413: ...21 4 MSM66591 ML66592User sManual Chapter 21 Bus Port Functions ...
Страница 414: ...Expansion Port Chapter 22 22 ...
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Страница 420: ...Serial Port with FIFO SCI5 Chapter 23 23 ...
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Страница 431: ...23 10 MSM66591 ML66592User sManual Chapter 23 Serial Port with FIFO SCI5 ...
Страница 432: ...RAM Monitor Function Chapter 24 24 ...
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Страница 441: ...24 8 MSM66591 ML66592User sManual Chapter 24 RAM Monitor Function ...
Страница 442: ...25 Electrical Characteristics Chapter 25 ...
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Страница 458: ...Package Dimensions Chapter 26 26 ...
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Страница 461: ...26 2 MSM66591 ML66592User sManual Chapter 26 Package Dimensions ...
Страница 462: ...Revision History Chapter 27 27 ...
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Страница 465: ...27 2 MSM66591 ML66592User sManual Chapter 27 Revision History ...